Multiple choice

The difference between the simple interest on Rs. X at 10% p.a. and the simple interest on Rs. Y at 8% p.a. after 3 years is Rs. 2100. What will be the difference after 7 years?

  1. Rs. 900

  2. Rs. 2100

  3. Rs. 4900

  4. Rs. 7000

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Simple interest difference for 3 years: 0.30X - 0.24Y = 2100. For 7 years, the difference is (7/3) × 2100 = Rs.4900 since simple interest scales linearly with time.