Question

A certain sum becomes
$\frac{7 \\ 3}{?}$
times itself in 10 years under simple interest. Find the rate of interest​

Answer 1

Let sum=S.

Then,amount=7S/6

S.I=7S/6-S=S/6

Time=3 years

Rate=(100×S)/(S×6×3)=5 5/9=50/9%

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