Question 729585
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Principal amount is Rs.72000 and interest is 12% and time period is 72 months take out compound interest
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The compounding period is not given in the problem, which proves that the problem was created 
by an amateur - not a professional Math writer.


I will assume that compounding is made monthly.


The future value is

    FV = {{{72000*(1+0.12/12)^72}}} = 147391.15  dollars.


The interest is the difference  147391.15 - 72000 = 77,391.15 dollars.    <U>ANSWER</U>
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Solved.