Compound Interest (Railway Maths) (Part – III)

Total Questions: 50

1. Find the answer of given question? [RRB NTPC 10/02/2021 (Evening) ]

Correct Answer: (d) Rs.2.04
Solution:

2. If an investment of Rs. 1000 amounts to Rs. 1440 in 2 years when compounded annually, then what is the rate of compound interest ? [RRB NTPC 11/02/2021 (Morning) ]

Correct Answer: (b) 20%
Solution:

3. A man invests Rs. 5,000 for three years at a certain rate of interest, compounded annually. At the end of the first year. It amounts to Rs. 5,600. Calculate the rate of interest per annum. [RRB NTPC 12/02/2021 (Morning) ]

Correct Answer: (c) 12%
Solution:

4. A sum was invested for 3 years on compound interest at 6% , 12% and 18% in first, second and third year respectively. The sum amounts to Rs. 20,000 in 3 years. Find the principal amount. [RRB NTPC 15/02/2021 (Morning) ]

Correct Answer: (b) Rs. 14,276.58
Solution:

5. Find the total amount (in Rs.) of Rs. 4,500 at 12% per annum for 2 years and 8 months compounded annually. [RRB NTPC 16/02/2021 (Evening)]

Correct Answer: (b) Rs. 6,096.38
Solution:

6. The compound interest on a sum of Rs. 7,500 for 2 years at 4% p.a. is: [RRB NTPC 17/02/2021 (Morning)]

Correct Answer: (d) Rs. 612
Solution:

7. The present worth of Rs. 338 due in 2 years at 4% per annum compound interest is: [RRB NTPC 22/02/2021 (Morning)]

Correct Answer: (a) Rs. 312.50
Solution:

8. If the compound interest on a certain sum of money for 3 years at 5% per annum is Rs. 3,783, then what would be the simple interest on the same sum of money for the same period and at the same rate? [RRB NTPC 27/02/2021 (Morning)]

Correct Answer: (a) Rs. 3,600
Solution:

9. Rs. 200 was invested for 2 years at 10% compound interest per year. If the rate of interest had been 20%, then how much more would the investor have received as interest for the same period? [RRB NTPC 27/02/2021 (Morning)]

Correct Answer: (a) Rs. 46
Solution:

10. The compound interest on a sum of money at 5% per annum for 3 years is Rs. 6,305/-. Find the simple interest (in Rs.) for the same sum at the same rate of interest for the same number of years. [RRB NTPC 02/03/2021 (Morning)]

Correct Answer: (a) 6,000/-
Solution: