41). A sum of money deposited at compound interest doubles itself in 4 years. It will amount to sixteen times at the same rate in
| A). 12 years |
| B). 16 years |
| C). 24 years |
| D). 30 years |
|
42). For how many years should Rs.1200 be invested at 10% p.a. in order to earn the same simple interest as is earned by investing Rs.1800 at 12% p.a. for 5 years?
| A). 9 |
| B). 10 |
| C). 12 |
| D). 11 |
|
43). A sum of money was lent at simple interest at 11% p.a. for \( \Large 3\frac{1}{2} \) years and \( \Large 4\frac{1}{2} \) years respectively. If difference in interests for two periods was Rs.5500, then the sum is
| A). Rs.50050 |
| B). Rs.55000 |
| C). Rs.50000 |
| D). Rs.50500 |
|
44). Rajan lent Rs.1200 to Rakesh for 3 years at a certain rate of simple interest and Rs.1000 to Mukesh for the same time at the same rate. If he gets Rs.50 more from Rakesh than from Mukesh, then the rate percent is
| A). \( \Large 8\frac{1}{3} \)% |
| B). \( \Large 6\frac{2}{3} \)% |
| C). \( \Large 10\frac{1}{3} \)% |
| D). \( \Large 9\frac{2}{3} \)% |
|
45). The difference between interests received from Canara Bank and Punjab & Sind Bank on Rs.500 for 2 years is Rs.2.50. The difference between their rates is
| A). 1% |
| B). 0.50% |
| C). 0.25% |
| D). 2.50% |
|
46). If compound interest for two successive years is Rs.110 and Rs.121 respectively, then the rate of interest is
| A). 10% |
| B). 8% |
| C). 6% |
| D). 4% |
|
47). A money lender finds that due to a fall in the rate of interest from 8% to \( \Large 7\frac{3}{4} \), his yearly income diminishes by Rs.615. His capital is
| A). Rs.260000 |
| B). Rs.246000 |
| C). Rs.238000 |
| D). Rs.224000 |
|
48). The simple interest on a sum of money will be Rs.6000 after 10 years. If principal is triple after 5 years, what will be the total interest at the end of the tenth year?
| A). Rs.6000 |
| B). Rs.9000 |
| C). Rs.12000 |
| D). Rs.15000 |
|
49). If a, b, c are three sum of money such that b is the simple interest on a, c is the simple interest on b for the same time at the same rate of interest, then
| A). \( \Large a^{2} = bc \) |
| B). \( \Large b^{2} = ac \) |
| C). \( \Large c^{2} = ab \) |
| D). abc = 1 |
|
50). A sum of Rs.15500 is lent out into two parts, one at 8% and another one at 6%. If total annual income is Rs.1060, then money lent at 8% is
| A). Rs.6500 |
| B). Rs.7200 |
| C). Rs.8400 |
| D). Rs.9000 |
|
