Question

Your older sister has deposited \$5,000 today at 8.5 percent interest for 5 years. You would...

Your older sister has deposited \$5,000 today at 8.5 percent interest for 5 years. You would like to have just as much money at the end of the next 5 years as your sister will have. However, you can only earn 7 percent interest. How much more money must you deposit today than your sister did if you are to have the same amount at the end of the 5 years.

a. \$321
b. \$360
c. \$387
d. \$401
e. \$413

Amount deposited by your sister today for 5 years= \$5000

Calculating its Future value at year end 5:-

Future Value = Invested Amount*(1+r)^n

Where,

r = Interest rate = 8.5%

n= no of periods = 5 years

Future Value = \$5,000*(1+0.085)^5

Future Value = \$5000*1.50365669018

Future Value = \$7,518.28

So, the amount your sister will have in year end 5 is \$7518.28

- Since you too wanted to have the same Future value at year end 5 but can only earn interest of 7%

Calculating the amount you need to deposit today:-

Present Value = Future Value /(1+r)^n

Where,

r = Interest rate = 7%

n= no of periods = 5 years

Present Value = \$7518.28/(1+0.07)^5

Present Value = \$7518.28/1.4025517307

Present Value = \$5360.43

Amount you need to depsoit today is \$5360.43

- the more money must you deposit today than your sister did if you are to have the same amount at the end of the 5 years = \$5360.43 - \$5000

= \$360.43

Option B

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