Question

A sum of money becomes four times of itself in 12 years. Find the rate percent per annum.

Q: A sum of money becomes four times of itself in 12 years. Find the rate percent per annum.

Let the sum = Rs. 100 then amount = Rs. 400 then S.I = Rs. 300 = PRT/100 or rate of interest(R) = 300 ×100 /(P×T) = 300 × 100 / ( 100 × 12) = 25%

A 15%

B 20%

C 25%

D 30%

E None of these

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Question

A sum of money becomes four times of itself in 12 years. Find the rate percent per annum.

Solution

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