Compound Interest (Railway Maths) (Part – II)

Total Questions: 50

41. Find the compound interest on a sum Rs. 25,000 for three years, if the rate of interest is 4% p.a. for the first year, 5% p.a. for the second year and 6% p.a. for the third year. [RRB NTPC 27/01/2021 (Evening)]

Correct Answer: (b) Rs. 3,938
Solution:

42. Simple interest on a sum of money at 5% per annum for 2 years is Rs. 50. The compound interest on the same sum for the same period at the same interest rate is: [RRB NTPC 28/01/2021 (Evening)]

Correct Answer: (b) Rs. 51.25
Solution:

43. Find the answer of given question? [RRB NTPC 30/01/2021 (Morning) ]

Correct Answer: (b) 1,261
Solution:

44. Rs. 100 was invested @ 10% compound interest per year for two years. If the rate of interest was increased to 20% for the same period, how many more rupees would the investor get as interest? [RRB NTPC 31/01/2021 (Morning)]

Correct Answer: (a) Rs. 23/-
Solution:

45. A deposited Rs. 8,000 in a bank at 8% per annum simple interest. B deposited Rs. 6,000 at 10% compound interest per annum. After 3 years the difference between their interest will be: [RRB NTPC 01/02/2021 (Morning)]

Correct Answer: (a) Rs. 66
Solution:

46. The difference between the compound interest and the simple interest accrued at the same rate of interest on an amount of Rs 16,000 in 2 years was Rs. 1,000. What was the rate of interest percent per annum ? [RRB NTPC 02/02/2021 (Morning) ]

Correct Answer: (b) 25%
Solution:

47. The difference between the compound interest and the simple interest on a principal of Rs. 24,000 in 2 years at same rate of interest is Rs. 60. The rate of interest is: [RRB NTPC 04/02/2021 (Morning)]

Correct Answer: (d) 5%
Solution:

48. A sum of money becomes Rs. 6,400 in 2 years and Rs. 8,100 in 4 years on compound interest. Find the rate of compound interest. [RRB NTPC 04/02/2021 (Morning)]

Correct Answer: (c) 12.5%
Solution:

49. A sum of money becomes 8 times of itself in 3 years at compound interest compounded annually. The rate of interest is: [RRB NTPC 05/02/2021 (Morning)]

Correct Answer: (a) 100%
Solution:

50. A sum of money was lent on compound interest. It becomes Rs 500 at the end of the first year and Rs 550 at the end of second year. Find the rate of compound interest per annum. [RRB NTPC 08/02/2021 (Morning) ]

Correct Answer: (d) 10%
Solution: