Compound Interest (Railway Maths) (Part – I)

Total Questions: 50

21. HDFC lends Rs. 1 million to HUDCO at 10% p.a simple interest for three years and HUDCO lends the same amount to Sahara States Housing Corporation at 10% p.a compound interest for three years. What is the earning of HUDCO in this way ? [NTPC CBT - I 23/07/2021 (Evening) ]

Correct Answer: (a) Rs. 31,000
Solution:

22. Find the difference between the Simple Interest and Compound Interest on Rs.10000 for 3 years at the rate of 3% per annum. [RRB JE 02/06/2019 (Evening)]

Correct Answer: (a) Rs.27.27
Solution:

23. Divide Rs.3364 between A and B so that the share of A after 5 years may be equal to the share of B after 7 years at 5% rate compounded annually. Find the share of A. [RRB JE 27/06/2019 (Morning)]

Correct Answer: (c) Rs.1764
Solution:

24. In how many years will a sum of ₹10,000 become ₹13,310 at 10% compound interest per annum, compounded annually? [Group D 18/08/2022 (Afternoon)]

Correct Answer: (d) 3
Solution:

25. A certain sum of money invested at compound interest becomes Rs 13,380 after 3 years and Rs 20,070 after 6 years, when the interest is compounded annually. Find the amount. [Group D 23/08/2022 (Evening)]

Correct Answer: (c) ₹8,920
Solution:

26. If the simple interest on a sum of money at 8% per annum for 2 years is ₹1,000, find the compound interest on the same sum for the same period at the same rate in case of annual compounding. [Group D 24/08/2022 (Morning)]

Correct Answer: (c) ₹1,040
Solution:

27. If 2 years ago Ravi borrowed an amount of ₹3,000 from Monu at 4% compound interest per annum, then what is the total amount Ravi has to pay to Monu to repay it? [Group D 24/08/2022 (Evening)]

Correct Answer: (d) ₹3,244.80
Solution:

28. If a sum of ₹3,500 is invested at 5% compound interest per annum, compounded annually, then what is the period for which the compound interest is ₹358.75? [Group D 26/08/2022 (Morning)]

Correct Answer: (b) 24 months
Solution:

29. Raghu invests ₹5,00,000 in a scheme in the name of his 16 years old daughter, paying compound interest at 5% per annum compounded annually. What will be the total amount received when the daughter is 18 years old? [Group D 26/08/2022 (Evening)]

Correct Answer: (d) ₹5,51,250
Solution:

30. If T denotes the sum of money, M denotes the number of years and P denotes the rate of interest, then the compound interest is given by: [Group D 29/08/2022 (Morning) ]

Correct Answer: (a)
Solution: