1.A certain sum amounts to Rs. 1,452 in two years and to Rs. 1,597.20 in three years at compound interest, then rate per cent is:
(a)10
(b)11
(c)13
(d)9
(e)15
2.In what time will a man receive Rs. 85 as compound interest on Rs. 320 at 12(1/2)% p.a. compounded yearly?
(a)4(1/2) yrs.
(b)2(1/2) yrs.
(c)2 yrs.
(d)5 yrs.
(e)3(1/2) yrs.
3.If the compound interest on a certain sum for two years at 10% p.a. is Rs. 2,100 the simple interest on it at the same rate for two years will be
(a)Rs. 1,980
(b)Rs. 1,760
(c)Rs. 2,000
(d)Rs. 1,800
(e)Rs. 1,805
4.If Rs. 1,200 amounts to Rs. 1,323 in two years at compound interest, then what will be the amount of Rs. 1,600 in three years at compound interest at the same rate per cent?
(a)Rs. 1,850
(b)Rs. 1,852.20
(c)Rs. 1,752.20
(d)Rs. 1,905.50
(e)Rs. 1,951
5.The difference between simple interest and compound interest on a certain sum of money for three years at 10% per annum is Rs. 15 and paise 50. The sum is:
(a)Rs. 5,000
(b)Rs. 550
(c)Rs. 5,500
(d)Rs. 500
(e)Rs. 1,500
6.A tree increases annually by 1/8 th of its height. By how much will it increase after 2(1/2) years, if it stand today 10 ft. high?
(a)data insufficient
(b)less than 12 ft.
(c)more than 3 ft.
(d)more than 2 ft.
(e)slightly more than 13 ft.
7.Seshank borrowed Rs. 20,000 from his friend at 18% per annum simple interest. He lent it to Tony at the same but rate compounded annually. Find his gain after two years.
(a)Rs. 648
(b)Rs. 836
(c)Rs. 324
(d)Rs. 704
(e)Rs. 572
8.Sashidharan took a loan of Rs. 20,000 to purchase a colour TV set from Royal Finance Co. He promised to make the payment after three years. The company charges compound interest @ 10% p.a. for the same. But, suddenly the company announces the rate of interest as 15% p.a. for the last one year of the loan period. What extra amount Sashidharan has to pay due to his announcement of new rate of interest?
(a)Rs. 7,830
(b)Rs. 6,620
(c)Rs. 4,410
(d)Rs. 1,210
(e)Rs. 3,000
9.Ravishankar borrowed Rs. 62,500 from bank to purchase one Home Theatre System. If the rate of interest be 12% per annum compounded annually, what payment he will have to make after 2 years 3 months?
(a)Rs. 75,320
(b)Rs. 80,752
(c)Rs. 83,650
(d)Rs. 64,960
(e)Rs. 84,380
10.The present population of a village is 9,261. If the annual birth rate is 8(1/2)% and the annual death rate is 3.5%, then calculate the population 3 years ago.
(a)10,721
(b)11,363
(c)11,391
(d)8,000
(e)10,561
Answers with Explanation!!!!!!!!!!!!
