Question

10. The difference between the compound interest and simple interest on a certain sum at 15% per annum for 2 years is rupees 45. Find the sum.
Please answer quickly​

Answer 1

Answer:

Let the sum be S.

SI=S×(15/100)×2=S×0.3

CI=S(1+15/100)^2-S

=S(1.15)^2-S

=S{(1.3225-1)

=S×0.3225

It is given

CI-SI=45

S(0.3225-0.3)=45

S(0.0225)=45

S=45/0.0225=2000