SOLUTION: Kyle Wong loans $12,000 to his brother-in-law. He will be repaid at the end of 9 years with interest at 8% compounded semiannually. Find out how much will be repaid.

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Kyle Wong loans $12,000 to his brother-in-law. He will be repaid at the end of 9 years with interest at 8% compounded semiannually. Find out how much will be repaid.       Log On


   



Question 961374: Kyle Wong loans $12,000 to his brother-in-law. He will be repaid at the end of 9 years with interest at 8% compounded semiannually. Find out how much will be repaid.
Found 2 solutions by mananth, ikleyn:
Answer by mananth(16949) About Me  (Show Source):
You can put this solution on YOUR website!
Kyle Wong loans $12,000 to his brother-in-law. He will be repaid at the end of 9 years with interest at 8% compounded semiannually. Find out how much will be repaid.
Compound interest formula
A= P(1+r/n)nt
A = Amount
P is the principal $12000
r= rate in decimal 8%= 0.08
n is the number of times that interest is compounded per unit 2 timesper year
t is the time the money is invested for, in years=9 years
A= 12000(1+0.08/2)^2*9

A = 12000*1.04^18= $24309.80
Amount to be repaid = $24309.80







Answer by ikleyn(53568) About Me  (Show Source):
You can put this solution on YOUR website!
.
Kyle Wong loans $12,000 to his brother-in-law. He will be repaid at the end of 9 years
with interest at 8% compounded semiannually. Find out how much will be repaid.
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        I don't know why @mananth treats the loan re-payments as a compound interest formula for cumulative ordinary annuity.
        It is  NEVER  treated in Finance that way.
        Usually, the loan re-payment problems are treated in totally different way.


Use the standard loan formula for semiannually payments

   PMT = P%2A%28r%2F%281-%281%2Br%29%5E%28-n%29%29%29


where L is the loan amount; r = 0.08%2F2 = 0.04is the effective semi-annual interest rate;
n is the number of payments (2*9 = 18 in this problem); PMT is the semi-annual payment.


In this problem  P = $12000.


Substitute these values into the formula and get for monthly payment

    PMT = 12000%2A%28%28%280.08%2F2%29%29%2F%281-%281%2B0.08%2F2%29%5E%28-18%29%29%29 = 12000%2A%280.04%2F%281-%281.04%29%5E%28-18%29%29%29 = $947.92.


Thus the semi-annual payment is $947.92.


In total, Kill Wong will pay  2*9*947.92 = 17062.56 dollars in 9 years.     ANSWER

Solved.