In January, you deposit $150 into your checking account. Every month after that, you deposit 10% more than you did the month before. How much did you deposit in August?
A)
$292.31
B)
$321.54
C)
$1432.08
D)
$1715.38
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OpenStudy (anonymous):
@vishweshshrimali5
OpenStudy (vishweshshrimali5):
Ohh so this time you are advertising a bank O.o ?
OpenStudy (vishweshshrimali5):
Just kidding.
OpenStudy (anonymous):
lol
OpenStudy (anonymous):
i got C but it says it's wrong
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OpenStudy (vishweshshrimali5):
Okay . Lets see. Suppose I deposited $ 150 in Jan. . Then, I am going to deposit :
150 + 10% of 150 in February. Right ?
OpenStudy (anonymous):
yes
OpenStudy (vishweshshrimali5):
Good. Similarly, in March I am going to deposit:
money I deposited in Feb + 10 % of money I deposited in Feb
Right ?
OpenStudy (anonymous):
$292.31 is what i got
OpenStudy (vishweshshrimali5):
The final answer ?
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OpenStudy (igreen):
January = 150.
10% of 150 = 15.
February = 165
10% of 165 = 16.5
March = 181.5
10% of 181.5 = 18.15
April = 199.65
10% of 199.65 = 19.965
May = 219.615
10% of 219.615 = 21.9615
June = 241.5765
10% of 241.5765 = 24.15765
July = 265.73415
10% of 265.73415 = 26.573415
August = 292.307565