61. If the compound interest on a sum for 2 years at 25/2
p.a. is Rs. 510 the simple interest on the same sum of
the same rate for the same period of time is
(a) Rs. 400 (b) Rs.450
(c) Rs.460 (d) Rs. 480

62. If the compound interest on a sum of money for 3
years at the rate of 5% per annum is Rs. 252.20, the
simple interest on the same sum at the same rate and
for the same time is:
(a) Rs. 220 (b) Rs. 240
(c) Rs. 245 (d) Rs. 250

63. If the compound interest on certain sum for 2 years at
4% p.a. is Rs. 102, the simple interest at the same rate
of interest for two years would be:
(a) Rs.200 (b) Rs.50
(c) Rs. 150 (d) Rs.100

64. If the difference between S.I and C.I for 2 years on a
sum of money lent at 5% is Rs. 6, then the sum is:
(a) Rs.2200 (b) Rs.2400
(c) Rs.2600 (d) Rs.2000

65. If the difference between the compound and simple
interests on a certain sum of money for 3 years at 5%
per annum is Rs. 15.25, then the sum is:
(a) Rs. 2000 (b) Rs. 1000
(c) Rs. 1500 (d) Rs. 2500

66. If the difference between the compound interest and
simple interest on a sum of 5% rate of interest per
annum for three years is Rs. 36.60, then sum is:
(a) Rs. 8000 (b) Rs. 8400
(c) Rs. 4400 (d) Rs. 4800

67. If the difference between the compound interest,
compounded every six months, and the simple interest
on a certain sum of money at 12% of rate per annum
for one year is Rs. 36, the sum is:
(a) Rs. 10000 (b) Rs. 12000
(c) Rs. 15000 (d) Rs. 9000

68. If the difference between the simple and compound
interests on a sum of money for 2 years at 4% per
annum is Rs. 800, the sum is:
(a) Rs. 50000 (b) Rs. 500000
(c) Rs. 100000 (d) Rs. 10000

69. If the rate of interest be 4% per annum for first year,
5% per annum for second year and 6% per annum for
third year, then the compound interest of Rs. 10000
for 3 years will be:
(a) Rs. 1600 (b) Rs. 1625.80
(c) Rs. 1575.20 (d) Rs. 2000

70. In how many years will a sum of Rs. 800 at 10% per
annum compound interest, compounded semiannually
becomes Rs. 926.10?
(a) 3/2 years (b) 5/3 years
(c) 7/3 years (d) 5/2 years