21) The simple interest on a certain sum of money for 2 yr at 6% per annum is Rs 300. The compound interest at the same rate for the same time will be
a) Rs 310
b) Rs 308
c) Rs 307
d) Rs 309
22) The compound interest on Rs 350 for 1 yr at 4% per annum, the interest being payble half yearly, will be
a) Rs 364.14
b) Rs 365.15
c) Rs 14.14
d) 15.15
23) A certain sum is invested for certain time, it amounts to Rs 450 at 7% per annum. Bt when invested at 5% per annum, It amounts to Rs 350. The time is
a) 50 yr
b) 60 yr
c) 45 yr
d) 40 yr
24) Sundaran invested an amount of Rs 10000 at compound interest rate of 10 percent per annum for a period of 3 yr. How much will he get after 3 yr ?
a) Rs 12340
b) Rs 13210
c) Rs 13320
d) Rs 13310
25) After how many years will a sum of Rs 12,500 become Rs 17,500 at the rate of 10% per annum?
(a) 2 years
(b) 3 years
(c) 4 years
(d) 5 years
26) A sum of money is borrowed and paid back in two equal annual instalments of ` 882, allowing 5% compound interest. The sum borrowed was
(a) Rs 1640
(b) Rs 1680
(c) Rs 1620
(d) Rs 1700
27) A difference between the interest received from two different banks on Rs 400 for 2 years is Rs 4. What is the difference between their rates?
(a) 0.5%
(b) 0.2%
(c) 0.23%
(d) 0.52%
28) What is the amount of equal instalment, if a sum of Rs 1428 due 2 years hence has to be completely repaid in 2 equal annual instalments starting next year.
(a) 700
(b) 800
(c) 650
(d) Cannot be determined
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