Asked by jyoti
simple interest and compound interest
on what sum will the compound interest at 10% per annum for 3 years compounded annually be Rs 331?
on what sum will the compound interest at 10% per annum for 3 years compounded annually be Rs 331?
Answers
Answered by
Reiny
x(1.10)^3 = x + 331
x(1.1)^3 - x = 331
x(1.1^3 - 1) = 331
x = 331/(1.1^3 - 1) = 1000
check:
1000(1.1^3) = 1331
so the increase (or interest) is 331
x(1.1)^3 - x = 331
x(1.1^3 - 1) = 331
x = 331/(1.1^3 - 1) = 1000
check:
1000(1.1^3) = 1331
so the increase (or interest) is 331
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