Simple Interest (Railway Maths) (Part – II)

Total Questions: 50

31. Ravi took a loan from a bank at the rate of 8% p.a. simple interest. After 5 years, he had to pay an interest of Rs. 6,400 for the period. Find the principal amount borrowed by Ravi. [RRB NTPC 13/01/2021 (Evening)]

Correct Answer: (a) Rs. 16,000
Solution:

32. At what rate percent per annum will the simple interest in 15 years on a sum of money be 3/4 of the sum invested? [RRB NTPC 16/01/2021 (Morning)]

Correct Answer: (b) 5%
Solution:

33. Vikas took a loan of Rs. 1,200 on simple interest for as many years as the rate of interest. If he paid Rs. 768 as interest at the end of the loan period, then what was the rate of interest? [RRB NTPC 21/01/2021 (Morning)]

Correct Answer: (d) 8.0%
Solution:

34. A sum of money amounts to Rs.12,000 after 6 years and Rs. 15,000 after 9 years at the same rate of simple interest. What is the rate of interest per annum? [RRB NTPC 21/01/2021 (Morning) ]

Correct Answer: (c)
Solution:

35. If the simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs.4,000 for 2 years at 10% p.a., then the sum placed on simple interest is: [RRB NTPC 21/01/2021 (Evening) ]

Correct Answer: (d) Rs.1,750
Solution:

36. At what rate per cent of simple interest does a sum of money double itself in 12 years? [RRB NTPC 23/01/2021 (Morning) ]

Correct Answer: (c)
Solution:

37. A man purchases a washing machine for Rs. 12,000. He pays Rs. 2,000 while purchasing and the rest after 1 year, on which he is charged a simple interest at the rate of 10% per year. The total amount he pays for the washing machine is: [RRB NTPC 23/01/2021 (Evening)]

Correct Answer: (a) Rs. 13,000
Solution:

38. The simple interest on a given sum of money for two years would have been Rs. 240 more if the rate of interest per annum had been 3% higher. Find the sum invested. [RRB NTPC 25/01/2021 (Morning)]

Correct Answer: (c) Rs. 4,000
Solution:

39. A sum of money at simple Interest doubles itself in 4 years 4 months. In how much time will it triple itself? [RRB NTPC 27/01/2021 (Morning) ]

Correct Answer: (d)
Solution:

40. Some amount out of Rs. 7,000 was lent at 6% p.a. and the remaining at 4% p.a. If the total simple interest received on the amount of Rs. 7,000 in 5 years was Rs. 1,600, then find the amount that was lent at 6% p.a. [RRB NTPC 27/01/2021 (Evening) ]

Correct Answer: (d) Rs. 2,000
Solution: