Multiple choice general knowledge math & puzzles

A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:

  1. 650

  2. 690

  3. 698

  4. 700

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

Interest for 1 year = 854 - 815 = 39. Interest for 3 years = 39 * 3 = 117. Principal (Sum) = Amount after 3 years - Interest for 3 years = 815 - 117 = 698.