11) A sum of money amounts to Rs 6690 after 3 yr and to Rs 10035 after 6 yr on compound interest. The sum is
a) Rs 4460
b) Rs 3650
c) Rs 4535
d) Rs 2800
12) Anish borrowed Rs 15000 at the rate of 12% and another amount at the rate of 15% for two yr. The total interest paid by him was Rs 9000. How much did he borrow ?
a) Rs 32000
b) Rs 33000
c) Rs 30000
d) Rs 63000
13) If the CI on a certain sum for 2 yr at 4% be Rs 510, What would be the SI ?
a) Rs 500
b) Rs 505
c) Rs 400
d) Rs 475
14) A sum of money invested at simple interest triples itself in 8 years at simple interest. Find in how many years will it become 8 times itself at the same rate?
(a) 24 years
(b) 28 years
(c) 30 years
(d) 21 years
15) Seema invested an amount of Rs 16000 for two years at compound interest and received an amount of Rs 17640 on maturity. What is the rate of interest ?
a) 8%
b) 5%
c) 4%
d) 3%
16) What annual instalment will discharge a debt of Rs 47250 due 3 yr hence at the rate of 5% simple interest ?
a) Rs 15500
b) Rs 16000
c) Rs 15000
d) Rs 14000
17) Harsh makes a fixed deposit of Rs 20,000 with the Bank of India for a period of 3 years. If the rate of interest be 13% SI per annum charged half-yearly, what amount will he get after 42 months?
(a) 27,800
(b) 28,100
(c) 29,100
(d) 28,500
18) In what time does a sum of money becomes four times at the simple interest rate of 10% per annum ?
a) 30 yr
b) 25yr
c) 35 yr
d) 40 yr
19) A sum of money doubles itself at compound interest in 15 yr. In how many years will it becomes eight times ?
a) 20 yr
b) 40 yr
c) 35 yr
d) 45 yr
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20) A certain sum of money amounts to Rs 1125 in 5 yr and to Rs 1200 in 8 yr. The sum is
a) Rs 900
b) Rs 500
c) Rs 1000
d) Rs 800