A sum Amounts to Rs 1326 in 6 years at 5% per annum. In What time will this sum double itself at the same rate of intrest?

Let Principle amount be Rs x


Given that

time (t) = 6 years

rate (r) = 5 % per annum

∴ Interest Received on Rs x is


According to Question-


⇒ Principle Amount (P) = Rs 1020


Now Rate (r) = 5% per annum

We have to find the time (t) in which amount gets doubled

⇒ Interest Received = Rs 1326


Hence the sum will double in 20 years

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