Simple Interest

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61 Peter invested an amount of ₹12,000 at the rate of 10 p.c.p.a. simple interest and another amount at the rate of 20 p.c.p.a. simple interest.The total interest earned at the end of one year on the total amount invested became 14 p.c.p.a..Find the total amount invested:

A
25,000
B
20,000
C
22,000
D
21,000

62 A lends ₹2500 to B and a certain sum to C at the same time at 7% p.a. simple interest .If after 4 years ,A altogether receives ₹1120 as interest from B and C ,then the sum lent to C is:

A
₹1100
B
₹1200
C
₹1500
D
₹1700

63 ₹800 becomes ₹956 in 3 years at a certain rate of Simple interest .If the rate of interest is increased buy 4% ,what amount will ₹800 become in 3 years?

A
₹ 1052
B
₹ 1032
C
₹ 1048
D
₹ 1042

64 A sum of ₹12,500 amounts to ₹15,500 in 4 years at the rate of simple interest .What is the rate of interest ?

A
6%
B
5%
C
8%
D
2%

65 A sum of money doubles it'self in 8 years. What is the rate of interest?

A
16.5%
B
10.5%
C
18.5%
D
12.5%

66 In how many years will ₹ 600 amount to ₹ 744 at 8% per annum?

A
2
B
3
C
4
D
5

67 In a certain time, a sum becomes 3 times at the rate of 5% per annum. At what rate of interest, the same sum becomes 6 times in same duration?

A
13.5 %
B
12.5 %
C
11.5 %
D
10.5 %

68 For a certain sum, the simple interest in 2 years at 8% per annum is ₹ 90 more

A
₹ 900
B
₹ 1800
C
₹ 2700
D
₹ 9000

69 Kriya deposit's an amount of X 65800 to obtain a simple interest at the rate of 14% per annum for 4 yr. What total amount will Kriya get at the end of 4 yr?

A
₹ 102648
B
₹ 115246
C
₹ 125578
D
₹ 110324

70 A sum becomes it's double in 10 yr. Find the annual rate of simple interest:

A
1%
B
5%
C
10%
D
20%