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Railways PYQCBT 1 2016

RRB NTPC · Question 59

Ram lent Rs. 6,000/– to Shiva for 3 years and Rs. 8,000/– to Krishna for 5 years at the same rate of simple interest per annum. He got a total interest of Rs. 5,220 from both. Find then rate of interest per annum. A. 6% B. 7% C. 8% D. 9%

  1. A

  2. D

  3. C

  4. B

Show answer & explanation

Answer: (B) D

Explanation

Let the rate be r% p.a. Interest = 6000 × r × 3/100 + 8000 × r × 5/100 = 180r + 400r = 580r. Setting 580r = 5220 gives r = 9, so the rate is 9% per annum.