Simple Interest (Railway Maths) (Part – III)

Total Questions: 50

31. A certain sum of money, invested on simple interest, amounts to Rs. 756 in 2 years and to Rs. 873 in 3.5 years. Find the sum (in Rs.). [RRB NTPC 21/03/2021 (Evening)]

Correct Answer: (c) 600
Solution:

32. A person lent a certain sum of money at the rate of 4% simple interest per annum. In 8 years, the interest amounted to Rs. 340 less than the sum lent. Find the sum lent. [RRB NTPC 27/03/2021 (Morning)]

Correct Answer: (c) Rs. 500
Solution:

33. A man lent a part of Rs. 30,000 at the rate of 10% per annum and the remaining at the rate of 8% per annum simple interest. The total interest he received after 3 years is Rs. 8,280. Find the amount he lent at 10% per annum. [RRB NTPC 27/03/2021 (Morning)]

Correct Answer: (d) Rs. 18,000
Solution:

34. The interest on a sum of money at 10% p.a. for 2 years with interest being compounded annually is Rs. 630. Find the simple interest (in Rs.) on the sum at the same rate of interest for 3 years. [RRB NTPC 03/04/2021 (Morning)]

Correct Answer: (b) 900
Solution:

35. A sum of money amounts to Rs. 850 in 3 years and Rs. 925 in 4 years on simple interest. What is the sum? [RRB NTPC 03/04/2021 (Evening)]

Correct Answer: (a) Rs. 625
Solution:

36. The simple interest on a sum of money borrowed is Rs. 10 at the rate of 10% p.a. for 10 years. How much is the sum of money borrowed? [RRB NTPC 05/04/2021 (Morning)]

Correct Answer: (b) Rs. 10
Solution:

37. Kumar lent an amount to Arif at a simple interest rate of 10% p.a. for 3 years, and Arif lent this amount to Naresh at a simple interest rate of 20% p.a. for 3 years. If Arif gained Rs. 1,560 in this process, then what was the amount that Kumar had lent to Arif? [RRB NTPC 07/04/2021 (Evening)]

Correct Answer: (d) Rs. 5,200
Solution:

38. The Simple Interest on some amount of money for 2 years is Rs. 400. If the rate of interest is 4% more, then the Simple Interest will be Rs. 400 more. What is the original amount of money? [RRB JE 22/05/2019 (Afternoon)]

Correct Answer: (a) Rs. 5,000
Solution:

39. If Rs. 64 amounts to Rs. 83.20 in 2 years, what will Rs. 86 amount to in 4 years at the same rate of Simple Interest? [RRB JE 22/05/2019 (Evening)]

Correct Answer: (b) Rs. 137.60
Solution:

40. A person borrows Rs.5000 for 2 years at 4% per annum Simple Interest. He immediately lends it to another person at 6.25% per annum for 2 years. Find his annual gain in the transaction ? [RRB JE 22/05/2019 (Evening) ]

Correct Answer: (b) Rs.112.50
Solution: