Sharp EL738C EL-738 Operation Manual - Page 56

Calculating percent change, Calculating compound interest rate

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1 Calculating percent change Sales in a company were $75,000 during the first year of operation. The second year's sales were $116,000. What percentage greater were the second year's sales than first year's sales? In this calculation, the number of compound periods is set to 1 (default). Procedure Key operation Bring up the initial dis- s play in NORMAL mode. Display 000 Select percent change/ compound interest calculations, and set all the variables to default values. . B . b Enter the old value. 75000 Q OLD PRC(PV)= 000 OLD PRC(PV)= 7500000 Enter the new value. i 116000 Q NEW PRC(FV)= 11600000 Calculate the percent i @ change. %(I/Y)= 5467 Answer: The second year's sales increased by 54.67% over the first year's sales. 2 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 Bring up the initial dis- s play in NORMAL mode. Display 000 Select percent change/ compound interest calculations, and set all the variables to default values. . B . b Enter the old value. 8000 Q OLD PRC(PV)= 000 OLD PRC(PV)= 800000 55

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55
Calculating percent change
Sales in a company were $75,000 during the first year of opera-
tion. The second year’s sales were $116,000. What percentage
greater were the second year’s sales than first 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
Q
OLD
PRC(PV)=
7500000
Enter the new value.
i
116000
Q
NEW
PRC(FV)=
11600000
Calculate the percent
change.
i
@
%(I/Y)=
5467
Answer:
The second year’s sales increased by 54.67% over
the first 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
Q
OLD
PRC(PV)=
800000
1
2