Question

A man gets a simple interest of Rs.1000 on a certain principal at
the rate of 5% per annum in 4 years. What compound interest will
the man get on twice the principal in 2years at the same rate?​

Answer 1

Principal = SI×100/Time×Rate

= 1000×100/4×5 = Rs.5000

Now, Principal = Rs.10000 [ 5000×2]

∴ CI = P [(1+Rate/100)^Time −1]

= 10000 [(1+5/100)^2−1]

= 10000 [(21/20)^2 2−1]

= 10000×41/400 = Rs.1025

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Answer 2

Answer:

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