11). At simple interest, a sum becomes 3 times in 20 yr. Find the time, in which the sum will be double at the same rate of interest.
| A). 8yr |
| B). 10 yr |
| C). 12 yr |
| D). 14 yr |
|
12). At a simple interest, a sum amounts to RS. 1012 in 2 1/2 yr and becomes RS. 1067.20 in 4 yr. What is the rate of interest?
| A). 2.50% |
| B). 3% |
| C). 4% |
| D). 5 |
|
13). Simple interest for the sum of RS. 1230 for 2 yr is RS. 10 more than the simple interest for RS. 1130 for the same duration. Find the rate of interest.
| A). 5% |
| B). 6% |
| C). 8% |
| D). 2% |
|
14). A certain sum becomes 8 fold in 15 yr at simple interest. What will be the rate of interest?
| A). \( \Large 46\frac{5}{3}% \) |
| B). \( \Large 46\frac{2}{3} %\) |
| C). \( \Large 46\frac{5}{8} %\) |
| D). \( \Large 46\frac{11}{12}% \) |
|
15). For a certain sum, the simple interest in 2 yr at 8% per annum is RS. 110 more than the simple interest in 1 yr at the rate of 5% per annum for the same sum. Find the sum.
| A). RS.5000 |
| B). RS.1000 |
| C). RS.1050 |
| D). RS.950 |
|
16). A sum was lent out for a certain time The sum amounts to RS. 400 at 10% annual interest rate. When the sum was lent out at 4% annual interest rate, it amounts to RS. 200. Find the sum.
| A). RS.200/3 |
| B). RS.100 |
| C). RS.400/3 |
| D). RS.500/3 |
|
17). A sum was invested for 4 yr at a certain rate of simple interest. If it had been invested at 2% more annual rate of interest, then RS. 56 more would have been obtained. What is the sum?
| A). RS.680 |
| B). RS.700 |
| C). RS.720 |
| D). RS.820 |
|
18). Mr. Deepak invested an amount of RS. 21250 for 6 yr. At what rate of simple interest, will he obtain the total amount of RS. 26350 at the end of 6 yr?
| A). 6% pa |
| B). 5% pa |
| C). 8% pa |
| D). 4% pa |
|
19). The dlfference of Simple interest from two banks for RS.1000 in 2 yr is RS.20.Find the difference in rates of interest.
| A). 2% |
| B). 1.50% |
| C). 1% |
| D). 2.50% |
|
20). Raju lent RS. 400 to Ajay for 2 yr and RS. 100 to Manoj for 4 yr and received from both RS. 60 as collective interest.Find the rate of interest, simple interest being calculated.
| A). 5% |
| B). 6% |
| C). 8% |
| D). 9% |
|
