Simple Interest (Railway Maths) (Part – II)

Total Questions: 50

41. The simple interest on a certain sum for 3 years at 8% per annum is Rs. 96 more than the simple interest on the same sum for 2 years at 9% per annum. Find the sum. [RRB NTPC 28/01/2021 (Morning)]

Correct Answer: (b) Rs. 1,600
Solution:

42. A sum of Rs. 800 is invested for 3 years at simple interest rate. The rates of interest for the 3 years are 6%, 8% and 10% per annum. Find the total amount of interest earned at the end of 3 years. [RRB NTPC 28/01/2021 (Evening)]

Correct Answer: (d) Rs. 192
Solution:

43. A sum of money amounts to 3 times the original sum in 15 years. In how many years will the original sum amount to 5 times of itself at the same rate of simple interest? [RRB NTPC 29/01/2021 (Morning)]

Correct Answer: (d) 30
Solution:

44. A sum of Rs. 10,000 is borrowed on simple interest at a rate of 15% per annum. Find the interest to be paid at the end of two years. [RRB NTPC 29/01/2021 (Morning)]

Correct Answer: (c) Rs. 3,000
Solution:

45. If Rs. 5,000 becomes Rs. 5,900 in one year, what will Rs. 8,000 become at the end of 5 years at the same rate of simple interest? [RRB NTPC 29/01/2021 (Morning)]

Correct Answer: (d) Rs. 15,200
Solution:

46. If simple interest is offered per annum on a sum of money invested for five years, the amount of money payable on maturity after the five years is Rs. 2,340. However, if the sum was invested only for two years, the amount payable on maturity would be Rs. 2,016. What was the original sum invested? [RRB NTPC 31/01/2021 (Morning)]

Correct Answer: (d) Rs. 1,800/-
Solution:

47. If the simple interest for 7 years is equal to 56% of the principal, it will be equal to the principal after: [RRB NTPC 01/02/2021 (Morning)]

Correct Answer: (c) 12 years 6 months
Solution:

48. An amount becomes eight-fifth of the original amount in 5 years at what percentage rate of simple interest per annum? [RRB NTPC 01/02/2021 (Evening)]

Correct Answer: (c) 12
Solution:

49. The rate at which a sum becomes 2 times of itself in 10 years at simple interest is: [RRB NTPC 02/02/2021 (Morning)]

Correct Answer: (a) 10%
Solution:

50. A sum of money, invested for 8 years on 5% per annum simple interest, amounted to Rs. 175 on maturity. What was the sum invested? [RRB NTPC 02/02/2021 (Evening) ]

Correct Answer: (b) Rs. 125
Solution: