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January 26, 2015

January 26, 2015

Posted by **jyoti** on Sunday, January 20, 2013 at 6:00am.

on what sum will the compound interest at 10% per annum for 3 years compounded annually be Rs 331?

- maths -
**Reiny**, Sunday, January 20, 2013 at 8:54amx(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

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