Sharp El738 User Guide
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![Page 54
53
Calculating number of days
Calculate the number of days between December 25, 2008 and
August 10, 2009 (using US date format and the actual calen-
dar).
Procedure Key operation Display
Bring up the initial dis-
play in NORMAL mode.s
000
Select day and date
calculations, and set all
the variables to default
values. K
.
b
M-D-Y 1=[MO]
1- 1-2001
Make sure the actual calendar is set (360 is not displayed).
Enter the fi rst date. 12252008
Q
M-D-Y 1=[TH]
12-25-2008
Enter the last date.
i 8102009...](http://img.usermanuals.tech/thumb/68/103097/w64_el738-user-guide-1512491821_d-53.png "Page 54
53
Calculating number of days
Calculate the number of days between December 25, 2008 and
August 10, 2009 (using US date format and the actual calen-
dar).
Procedure Key operation Display
Bring up the initial dis-
play in NORMAL mode.s
000
Select day and date
calculations, and set all
the variables to default
values. K
.
b
M-D-Y 1=[MO]
1- 1-2001
Make sure the actual calendar is set (360 is not displayed).
Enter the fi rst date. 12252008
Q
M-D-Y 1=[TH]
12-25-2008
Enter the last date.
i 8102009...")
![Page 55
54
Procedure Key operation Display
Move to the last date
and calculate.z
@
M-D-Y 2=[MO]
2-21-2011
Answer: The last date is February 21, 2011.
Percent Change/Compound Interest Cal-
culations
Using percent change/compound interest calculations, you can
determine the values of percentage rates of change (increase or
decrease) or interest rates compounding periodically.
Variables used in percent change/compound interest
calculations
Variable Description Default value
OLD PRC (PV) Old price (old value)...](http://img.usermanuals.tech/thumb/68/103097/w64_el738-user-guide-1512491821_d-54.png "Page 55
54
Procedure Key operation Display
Move to the last date
and calculate.z
@
M-D-Y 2=[MO]
2-21-2011
Answer: The last date is February 21, 2011.
Percent Change/Compound Interest Cal-
culations
Using percent change/compound interest calculations, you can
determine the values of percentage rates of change (increase or
decrease) or interest rates compounding periodically.
Variables used in percent change/compound interest
calculations
Variable Description Default value
OLD PRC (PV) Old price (old value)...")
50 Calculating straight-line depreciation In April, your company begins depreciation of a commercial building with a 30-year life and no salvage value. The building costs $1,500,000. Calculate the depreciation amount, remaining book value and remaining depreciable value for the third year using the straight-line depreciation method. Procedure Key operation Display Bring up the initial display in NORMAL mode, and select the straight-line deprecia- tion method.s ~ 2 0 000 Select depreciation calculations.OSL ---------- Enter the number of years of depreciation.i 30 QLIFE(N)= 3000 Enter the starting month.i 4 QSTART MONTH= 400 Enter the cost of asset. i 1500000 QCOST(PV)= 150000000 Enter the salvage value. i 0 QSALVAGE(FV)= 000 Enter the year for calcu- lating depreciation value.i 3 QYEAR= 300 Calculate depreciation for the year.iDEPRECIATE= 5000000 Calculate the remaining book value.iRBV= 136250000 Calculate the remaining depreciation value.iRDV= 136250000 Answer: At the third year, the depreciation amount is $50,000, the remaining book value is $1,362,500, and the re- maining depreciable value is $1,362,500. JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.
51 Conversion between APR and EFF Interest rates can be converted between APR (annual, or nomi- nal percentage rate) and EFF (effective interest rate). • The APR is an investment’s annual rate of interest when com- pounding happens only once a year. The interest rate printed on a bond is an example of an APR. • The EFF is an investment’s annual rate of interest when com- pounding happens more often than once a year. It refl ects the actual amount of return for a given nominal rate. For example, if your investment compounds monthly, then the stated nomi- nal percentage rate becomes a monthly rate, and the EFF refl ects your actual annual rate of return. Basic operations 1. Press s to clear the display. Make sure the calculator is in NORMAL mode. 2. Enter the calculation data in the following format: • To change APR to EFF: Number of compounding periods per year > Nominal percentage rate . P • To change EFF to APR: Number of compounding periods per year > Effective interest rate . ! Converting between APR and EFF Procedure Key operation Display Calculate the effective interest rate for twelve compounding periods with an 18% APR.s 12 > 18 . P 12,18¬EFF 1956 Convert this rate back to the origi- nal APR.12 > 19.56 . !12,19.56¬APR 1800 JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.
52 Day and Date Calculations Using day and date calculations, you can fi nd dates and the numbers of days between dates. Variables used in day and date calculations Variable Description Default value M-D-Y 1 The fi rst date 1-1-2001 M-D-Y 2 The last date 1-1-2001 DAYS Number of days 0 You can change the date format to D-M-Y (see page 10). Setting the day-count method You can toggle between the actual calendar (365 days plus leap years) and a 360-day calendar (12 months of 30 days each) using . &. The actual calendar is set by default (360 is not displayed). The calendar range is from January 1, 1901 to December 31, 2099. Basic operations Refer to page 19 for basic variable operations. 1. Press s to clear the display. • Make sure the calculator is in NORMAL mode. 2. Select day and date calcula- tions by pressing K. • To end day and date calcula- tions, press s. If you press s during entry, any entered values will be cleared. 3. Change the day-count method, using . &, if neces- sary. 4. Enter the values of any two known variables: the fi rst date, the last date, or the number of days. • For date entry, refer to page 47, ”Entering dates”. 5. Move to the variable you wish to calculate, using the z and i keys, and press @ to calculate. • If the calculator is set to 360-day calendar mode (360 is displayed), it is not possible to obtain either the fi rst or last dates, only the number of days. *1 *1 *1 M-D-Y 1=[MO] 1- 1-2001 JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.
53 Calculating number of days Calculate the number of days between December 25, 2008 and August 10, 2009 (using US date format and the actual calen- dar). Procedure Key operation Display Bring up the initial dis- play in NORMAL mode.s 000 Select day and date calculations, and set all the variables to default values. K . b M-D-Y 1=[MO] 1- 1-2001 Make sure the actual calendar is set (360 is not displayed). Enter the fi rst date. 12252008 Q M-D-Y 1=[TH] 12-25-2008 Enter the last date. i 8102009 QM-D-Y 2=[MO] 8-10-2009 Move to DAYS and calculate.i @DAYS= 22800 Answer: 228 days • If the 360-day calendar is selected, the answer will be 225 days. Finding a date Find the date 100 days after November 13, 2010 (using US date format and the actual calendar). Procedure Key operation Display Bring up the initial dis- play in NORMAL mode.s 000 Select day and date calculations, and set all the variables to default values. K . b M-D-Y 1=[MO] 1- 1-2001 Make sure the actual calendar is set (360 is not displayed). Enter the fi rst date.1113210 Q M-D-Y 1=[SA] 11-13-2010 Move to DAYS and en- ter the number of days.i i 100 QDAYS= 10000 1 2 JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.
54 Procedure Key operation Display Move to the last date and calculate.z @ M-D-Y 2=[MO] 2-21-2011 Answer: The last date is February 21, 2011. Percent Change/Compound Interest Cal- culations Using percent change/compound interest calculations, you can determine the values of percentage rates of change (increase or decrease) or interest rates compounding periodically. Variables used in percent change/compound interest calculations Variable Description Default value OLD PRC (PV) Old price (old value) 0 NEW PRC (FV) New price (new value) 0 % (I/Y) Percent change 0 PERIODS (N) Number of compounding periods 1 Basic operations Refer to page 19 for basic variable operations. 1. Press s to clear the display. • Make sure the calculator is in NORMAL mode. 2. Select percent change/ com- pound interest calculations by pressing . B. • To end percent change/com- pound interest calculations, press s. • If you press s during entry, any entered values will be cleared. 3. Enter the values of any three known variables: old price, new price, percent change, or number of compounding periods. 4. Move to the variable you wish to calculate, using the z and i keys, and press @ to calculate. OLD PRC(PV)= 000 JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.
55 Calculating percent change Sales in a company were $75,000 during the fi rst year of opera- tion. The second year’s sales were $116,000. What percentage greater were the second year’s sales than fi rst year’s sales? In this calculation, the number of compound periods is set to 1 (default). Procedure Key operation Display Bring up the initial dis- play in NORMAL mode.s 000 Select percent change/ compound interest calculations, and set all the variables to default values.. B . b OLD PRC(PV)= 000 Enter the old value.75000 QOLD PRC(PV)= 7500000 Enter the new value. i 116000 QNEW PRC(FV)= 11600000 Calculate the percent change.i @%(I/Y)= 5467 Answer: The second year’s sales increased by 54.67% over the fi rst year’s sales. Calculating compound interest rate You opened an account compounding annually and deposited $8,000 eighteen years ago. You currently have $9,800. What is the compound interest rate? Procedure Key operation Display Bring up the initial dis- play in NORMAL mode.s 000 Select percent change/ compound interest calculations, and set all the variables to default values.. B . b OLD PRC(PV)= 000 Enter the old value.8000 QOLD PRC(PV)= 800000 1 2 JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.
56 Procedure Key operation Display Enter the new value. i 9800 Q NEW PRC(FV)= 980000 Set the number of com- pound periods to 18.i i 18 QPERIODS(N)= 1800 Calculate the com- pound interest rate.z @%(I/Y)= 113 Answer: The compound interest rate is 1.13%. Cost/Sell/Margin/Markup Calculations Using cost/sell/margin/markup calculations, you can determine costs, selling prices, margins and markup. Variables used in cost/sell/margin/markup calcula- tions Variable Description Default value COST Cost 0 SELL Selling price 0 MARGIN Profi t margin (%) 0 MARK UP Markup (%) 0 Profi t margin (%) is calculated based on selling price. Markup (%) is calculated based on cost. Basic operations Refer to page 19 for basic variable operations. 1. Press s to clear the display. • Make sure the calculator is in NORMAL mode. 2. Select cost/sell/margin/ markup calculations by pressing I. • To end cost/sell/margin/mark- up calculations, press s. • If you press s during entry, any entered values will be cleared. *1 *1 *2 *2 COST= 000 JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.
57 3. Enter the values of any two known variables as follows: Unknown variable Known variables COST SELL, and MARGIN or MARK UP SELL COST, and MARGIN or MARK UP MARGIN COST and SELL MARK UP COST and SELL Because only either MARGIN or MARK UP is used in any cost/sell/margin/markup calculation, the unused variable is given a value of “----------”. Initially, MARK UP is set to “----------”. If you enter a value for MARK UP, MARGIN is set to “----------”, and vice versa. 4. Move to the variable you wish to calculate, using the z and i keys, and press @ to calculate. Determining selling price In a furniture business, it is desirable to realize a 95% markup from cost to retail price for each item. A certain sofa costs $455.60. What should its selling price be? Procedure Key operations Display Bring up the initial dis- play in NORMAL mode.s 000 Select cost/sell/margin markup calculations, and set all the variables to default values.I . b COST= 000 Enter cost.455.6 QCOST= 45560 Enter markup rate. i i i 95 QMARK UP= 9500 Calculate selling price. z z @SELL= 88842 Answer: The selling price should be $888.42. *1 *1 *1 JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.
58 Breakeven Calculations Using breakeven calculations, you can calculate fi xed cost, vari- able cost per unit, unit price, profi t and quantity. Variables used in breakeven calculations Variable Description Default value FIXED Fixed cost 0 VARIABLE Variable cost per unit 0 PRICE Unit price 0 PROFIT Profi t 0 QUANTITY Quantity 0 Basic operations Refer to page 19 for basic variable operations. 1. Press s to clear the display. • Make sure the calculator is in NORMAL mode. 2. Select breakeven calculations by pressing $. • To end breakeven calcula- tions, press s. • If you press s during entry, any entered values will be cleared. 3. Enter the values of any four known variables. 4. Move to the variable you wish to calculate, using the z and i keys, and press @ to calculate. Calculating the breakeven point Your company has developed a new product and plans to sell it at a price of $120 per unit. The variable cost per unit is $75.80 and the fi xed costs total $15,000. What is the breakeven point for this product? Procedure Key operation Display Bring up the initial dis- play in NORMAL mode.s 000 FIXED= 000 JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.
59 Procedure Key operation Display Select breakeven calculations, and set all the variables to default values.$ . b FIXED= 000 Enter fi xed cost.15000 QFIXED= 1500000 Enter variable cost per unit.i 75.80 QVARIABLE= 7580 Enter unit price. i 120 QPRICE= 12000 Leave profi t as is. iPROFIT= 000 Calculate quantity. i @QUANTITY= 33937 Answer: The breakeven point of this product is 339.37 units. JOBODJBMVODUJPOT$VSSFOUJOEEJOBODJBMVODUJPOT$VSSFOUJOEE1.1.