A sum of Rs.3800 is invested at a compound interest for three years, the rate of interest being 10% p.a., 20% p.a. and 25% p.a. for the 1st, 2nd and the 3rd years respectively. Find the interest received at the end of the three years.
Choices:
A) A)282 B) B)2470 C) C)8383 D) D)8383 E) E)3284
Let A be the amount received at the end of the three years.   A = 3800[1 + 10/100][1 + 20/100][1 + 25/100]   A = 3800 * 1.65   A = Rs.6270   So the interest = 6270 - 3800 = Rs.2470   Answer: 2470
<result>B</result>
A sum of Rs.3800 is invested at a compound interest for three years, the rate of interest being 10% p.a., 20% p.a. and 25% p.a. for the 1st, 2nd and the 3rd years respectively. Find the interest received at the end of the three years.