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At what rate of interest per annum the simple interest on a certain sum becomes 2/5times of amount in 10 years at simple interest?
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At what rate of interest per annum the simple interest on a certain su...
Ans.

Let sum = x

Time = 10 years.

S.I = 2x /5, [as per question]

Rate =( (100 * 2x) / (x*5*10))%

=> Rate = 4%

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At what rate of interest per annum the simple interest on a certain sum becomes 2/5times of amount in 10 years at simple interest?
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