Simple Interest (Railway Maths) (Part – III)

Total Questions: 50

41. If a sum of money doubles itself in 4 years at a certain rate, when will it become 16 time itself at the same rate of Simple Interest? [RRB JE 23/05/2019 (Evening) ]

Correct Answer: (d) 60 years
Solution:

42. If Simple Interest is 12.5% more than the principal and number of years(n), rate(r) are numerically in the ratio 2: 1, then find the values of n, r. [RRB JE 24/05/2019 (Morning) ]

Correct Answer: (b)
Solution:

43. If a sum becomes 4 times in 20 years ,what is the rate of simple interest ? [RRB JE 24/05/2019 (Evening) ]

Correct Answer: (c)
Solution:

44. At what rate per cent will a sum of money double itself in 30 years? [RRB JE 26/05/2019 (Evening) ]

Correct Answer: (c)
Solution:

45. Rs. 800 becomes Rs. 956 in 3 years at a certain rate of Simple Interest. If the rate of interest is increased by 4%, what will Rs. 800 become in 3 years? [RRB JE 27/05/2019 (Afternoon)]

Correct Answer: (a) Rs. 1052
Solution:

46. Rs.16,500 is split into two fixed deposits for 2 years at 10% and 12% Simple Interest. If the total interest received from the deposits is Rs. 3,620, how much was invested in the 12% scheme? [RRB JE 28/05/2019 (Morning)]

Correct Answer: (d) Rs. 8,000
Solution:

47. P1, P2, P3 are invested at 4%, 6%, 8% respectively such that the Simple Interest from all the three at the end of the year are equal. If the sum of three investments is Rs. 2,600, then find the values of P1, P2 and P3 respectively. [RRB JE 28/05/2019 (Afternoon)]

Correct Answer: (b) Rs. 1,200, Rs. 800, Rs. 600
Solution:

48. If a loan grew 3 times in 6 years at Simple Interest, then how much time will it take to grow 8 times? [RRB JE 29/05/2019 (Afternoon)]

Correct Answer: (d) 21 years
Solution:

49. If the Simple Interest on a certain sum for 15 months at 7.5% per annum exceeds the Simple Interest on the same sum for 8 months at 12.5% per annum by Rs. 32.50, then find the sum. [RRB JE 29/05/2019 (Afternoon)]

Correct Answer: (c) Rs. 3,120
Solution:

50. If a certain sum becomes Rs. 20,720 in 4 years and Rs. 24,080 in 6 years, find the sum and rate of Simple Interest. [RRB JE 30/05/2019 (Afternoon)]

Correct Answer: (c) Rs. 14,000, 12%
Solution: