Simple Interest (Railway Maths) (Part – I)

Total Questions: 50

41. If interest is ₹3,000, the rate of interest is 6% per annum simple interest, and time period is 4 years, then the principal sum is _____. [Group D 15/09/2022 (Afternoon)]

Correct Answer: (b) ₹12,500
Solution:

42. At what rate of simple interest per annum will a sum of money get doubled in 10 years? [Group D 15/09/2022 (Evening)]

Correct Answer: (d) 10%
Solution:

43. A sum of money was invested at a certain rate of simple interest per annum for a period of 4 years. Had the rate of simple interest per annum been 2% more, the sum invested would have earned a total of ₹640 more as interest in these 4 years. What was the sum (in ₹) invested? [Group D 16/09/2022 (Evening)]

Correct Answer: (c) 8,000
Solution:

44. Ramesh invested a certain sum of money at 9% per annum simple interest. If he receives an interest of ₹20,250 after one year, the sum he invested is: [Group D 18/09/2022 (Afternoon)]

Correct Answer: (a) ₹2,25,000
Solution:

45. If the principal amount is ₹13,000, then the simple interest for 4 years at a rate of 5% per annum is ________. [Group D 19/09/2022 (Afternoon) ]

Correct Answer: (c) ₹2,600
Solution:

46. Johnny borrows ₹7,000 from a bank at simple interest. After 3 years he pays ₹4,000 to the bank, this amount being entirely adjusted as repayment of part of the principal borrowed. At the end of 5 years from the date of borrowing he pays ₹4,350 to the bank to settle the account. Find the rate of interest. [Group D 19/09/2022 (Evening)]

Correct Answer: (d) 5%
Solution:

47. If a sum of ₹2,000 amounts to ₹2,360 in 3 years at a certain rate of simple interest per annum, then what will the same sum amount to in 5 years, if the rate of simple interest per annum remains the same? [Group D 27/09/2022 (Morning)]

Correct Answer: (b) ₹2,600
Solution:

48. Azim borrowed a certain sum which amounted to ₹19,800 in 36 months at 12.5% per annum simple interest. What is the borrowed sum? [Group D 28/09/2022 (Morning)]

Correct Answer: (a) ₹14,400
Solution:

49. A certain sum under simple interest at a certain rate of interest per annum amounts to ₹1,200 in 2 years and to ₹1,500 in 3 years. The rate of interest per annum is: [Group D 28/09/2022 (Afternoon)]

Correct Answer: (c) 50%
Solution:

50. The simple interest for 6 years, at a certain rate of interest per annum, is one-sixth of the principal. At the same rate of simple interest, what sum of money will amount to ₹6,000 total in 3 years? (Give your answer correct to 2 decimal places.) [Group D 07/10/2022 (Morning)]

Correct Answer: (c) ₹5,538.46
Solution: