A certain sum of money triples itself in 5 years at simple interest In how many years it will be fiv...........

Quantitative Aptitude (CGL) Simple Interest

A certain sum of money triples itself in 5 years at simple interest. In how many years it will be five times?

Let the amount be 100.
100 + 100 ×5 x 5R/100 =300.
100 + 5R = 300
R = 40.
100 + 100 × N x 40/100= 500
40N = 400
N = 10.

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