Multiple choice

A sum lent at simple interest amounts to Rs. 6,240.80 in one year and to Rs. 7,563.20 in 4 years. The sum (in Rs.) and the rate of interest per annum, respectively, are: साधारण ब्याज पर उधार दी गई राशि एक वर्ष में रु. 6,240.80 और 4 साल में रु. 7,563.20 हो जाती है राशि (रुपये में) और प्रति वर्ष ब्याज की दर, क्रमशः हैं:

  1. 6,200, 8.5%

  2. 5,800, 8.5%

  3. 5,800, 7.6%

  4. 6,200, 7.6%

  5. 6,400, 12.5%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Interest for 3 years (year 4 minus year 1) = 7,563.20 - 6,240.80 = 1,322.40. Annual interest = 1,322.40/3 = 440.80. Principal = 6,240.80 - 440.80 = 5,800. Rate = (440.80/5,800) × 100 = 7.6% per annum. Option C (5,800, 7.6%) is correct.

Keep practicing — related questions