th difference between the compound interest and simple interest on a certain sum for 2years at 6per cent per annum is rs 90 find the sum

let the sum be P = Rs. 100.

time T = 2 years, rate of interest R = 6% per annum

simple interest =

compound amount=

therefore the compound interest = compound amount - principal

=112.36-100=12.36/-

the difference between the compound interest and simple interest = 12.36-12.00 = 0.36/-

if the difference between the CI and SI is Rs. 0.36 the principal = Rs. 100

if the difference between the CI and SI is Rs. 90 the principal =

thus the sum is Rs. 25000.

hope this helps you.

**
**