The difference between compound interest and simple interest on a sum for 3 years at 10% p.a. is Rs.124 Find the sum. Choices
A) Rs.5000  B) Rs.4000  C) Rs.6000  D) Rs.8000  E) Rs.7000
For 3 years, we know   C.I-S.I= p(R/100)^3+3(R/100)^2   so, putting all values we have,   124=p((10/100)^3+3(10/100)^2)= 4000   ANSWER:Rs.4000
<result>B</result>
The difference between compound interest and simple interest on a sum for 3 years at 10% p.a. is Rs.124 Find the sum.