Simple Interest (Railway Maths) (Part – I)

Total Questions: 50

1. Find the simple interest on 2,000 at 8.25% per annum for the period from 7 February 2022 to 20 April 2022. [Group D 17/08/2022 (Morning) ]

Correct Answer: (d) 33
Solution:

2. At simple interest, a certain sum of money amounts to ₹1,250 in 2 years and to ₹2,000 in 5 years. Find the rate of interest per annum (rounded off to two places of decimal). [Group D 17/08/2022 (Afternoon) ]

Correct Answer: (b) 33.33%
Solution:

3. Two banks, A and B, offered loans at 4.5% and 5.5% per annum, respectively. Ramesh borrowed an amount of ₹ 2,00,000 from each bank. Find the positive difference in the amounts of simple interest paid to the two banks by Ramesh after 2 years. [Group D 25/08/2022 (Morning) ]

Correct Answer: (b) ₹4,000
Solution:

4. Raghav's monthly salary is ₹18,000. Raghav took a loan of ₹30,000 on simple interest for 3 years at the rate of 5% per annum. The amount that he will be paying as simple interest in 3 years is what percentage of his monthly salary? [Group D 14/09/2022 (Evening) ]

Correct Answer: (d) 25%
Solution:

5. Find the answer of given question? [Group D 15/09/2022 (Morning) ]

Correct Answer: (a) 16
Solution:

6. Surbhi invested a total sum of ₹47,740 in three schemes A, B and C such that the simple interest received from scheme B at 9% p.a. after 4 years and from scheme C at 8% p.a. after 5 years were the same. What is the positive difference (in ₹) between the sums invested in schemes C and A? [Group D 30/09/2022 (Afternoon)]

Correct Answer: (a) 4,620
Solution:

7. A sum increases by 75% in 10 years at a certain rate of simple interest per annum. By what percentage will the same sum increase in 6 years at the same rate of simple interest per annum? [NTPC CBT II Level 6 (09/05/2022) Shift 1]

Correct Answer: (b) 45%
Solution:

8. Suresh borrows ₹8,00,000 at 24% per annum simple interest and Ramesh borrows ₹9,10,000 at 20% per annum simple interest. In how many years will their amounts of debts be equal? [NTPC CBT II Level 2 (13/06/2022) Shift 2]

Correct Answer: (c) 11
Solution:

9. Rachel borrowed ₹10,000 at 10% simple interest per annum. She paid back ₹3,000 after Year 1, ₹ 2,800 after year 2 and the remaining amount due after Year 3. If interest was charged on reducing balance, what was the amount Rachel paid as the final installment ? [NTPC CBT II Level 5 (15/06/2022) Shift 2 ]

Correct Answer: (b) ₹6,600
Solution:

10. A person invested some amount at the rate of 12% per annum simple interest and another amount at the rate of 10% per annum simple interest. He received yearly interest of Rs 125 from both the investments. But if he had interchanged the amounts invested. He would have received Rs 3 more as interest. How much did he invest at 10% per annum simple interest originally ? [NTPC CBT II Level 2 (16/06/2022) Shift 3 ]

Correct Answer: (a) 650
Solution: