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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