Question

A certain sum becomes 7/3 times itself in 10 years under S.I Find the rate of interest

Answer 1

Answer:

Let sum = S. Then, amount = 7S/6

S.I. = 7S/6 - S = S/6; Time = 3 years.

Rate = (100 x S) / (S x 6 x 3) = 5 5/9 = 50/9 %.

Answer 2

Solution:

Let sum=S

Then,amount=7S/6

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

Time=3 years

Rate=(10×S)/(S×6×3)=5 5/9=50/9%

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