Question

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

Answer 1

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 =
hence the sum is Rs. 25000.
hope this helps you.♡♡