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Sharp El738 User Guide

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Page 51

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...

Page 52

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...

Page 53

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 
. 
&....

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)...

Page 56

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)=...

Page 57

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...

Page 58

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...

Page 59

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...

Page 60

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....
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