Compound Interest (Railway Maths) (Part – I)

Total Questions: 50

31. Find the compound interest on ₹12,500 at 3% per annum for 3 years when interest is compounded annually (correct to nearest rupees). [Group D 29/08/2022 (Afternoon)]

Correct Answer: (c) ₹1,159
Solution:

32. Raj invested ₹14,000 at 10% p.a. for 1 year at compound interest, compounded half-yearly. The amount received by him is: [Group D 29/08/2022 (Evening)]

Correct Answer: (a) ₹15,435
Solution:

33. Arun borrowed a sum of ₹9,000 from Jayanthi at 10% rate of compound interest per annum, compounded annually. Find the total amount paid by Arun after 2 years to clear all dues. [Group D 01/09/2022 (Morning)]

Correct Answer: (b) ₹10,890
Solution:

34. A sum of ₹36,000 deposited at a certain rate of compound interest, compounded annually, becomes three times itself after 6 years. How much will it become after 18 years at the same rate of compound interest? [Group D 01/09/2022 (Evening)]

Correct Answer: (c) ₹9,72,000
Solution:

35. The amount on a sum of ₹2,400 at 5% per annum compound interest, compounded annually, in 2 years will be: [Group D 05/09/2022 (Afternoon)]

Correct Answer: (d) ₹2,646
Solution:

36. If the interest is compounded half-yearly, what will a sum of ₹16,000 become after one year at 20% per annum compounded annually? [Group D 06/09/2022 (Evening)]

Correct Answer: (c) ₹19,360
Solution:

37. If a certain sum becomes two times itself in 6 years at compound interest in case of annual compounding, then the number of years in which it will become eight times of itself at the same rate of interest under annual compounding is: [Group D 09/09/2022 (Morning) ]

Correct Answer: (a) 18 years
Solution:

38. Suman invested a sum of ₹20,000 at 10% per annum compound interest. If she received an amount of 26,620 after n years, the value of n is : [Group D 09/09/2022 (Afternoon)]

Correct Answer: (c) 3 years
Solution:

39. If the interest on a sum of ₹y at 4% per annum compounded annually for 2 years is ₹612, then the total amount payable at the end of the two-year period will be: [Group D 14/09/2022 (Afternoon)]

Correct Answer: (c) ₹8,112
Solution:

40. The difference between the compound interest (when interest is compounded annually) and the simple interest if ₹10,000 is deposited at 5% rate of interest per annum for 2 years is: [Group D 15/09/2022 (Evening)]

Correct Answer: (a) ₹25
Solution: