A sum of amount at certain rate of compound interest doubles in 3 years.- In 9 years it will be k times of the original principal. What is the value of k ?(1) 8 (2) 6(3) 9 (4) 10
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Being Cound Interest
3 year = 2X ( X Principal + X Interest)
6 Years = 4X
9 YEars = 8X
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