Multiple choice

A sum of money at simple interest amounts to Rs.6,000 in 4 years and to Rs.6,750 in 7 years at the same rate per cent p.a. of interest. The sum (in Rs.) is: साधारण ब्याज पर एक राशि 4 वर्षों में 6,000 रुपये और 7 वर्षों में समान दर पर 6,750 रुपये हो जाती है। ब्याज की राशि (रुपये में) है:

  1. 5,100

  2. 4,800

  3. 4,000

  4. 5,000

  5. 3,200

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

Interest for 3 years (7-4) = Rs 6,750 - Rs 6,000 = Rs 750. Annual interest = Rs 750/3 = Rs 250. Principal = Amount after 4 years - Interest for 4 years = Rs 6,000 - Rs 1,000 = Rs 5,000. Verification: Rs 5,000 + 4 × 250 = Rs 6,000 ✓