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In how much time, will a sum of money become double of itself at 15% per annum simple interest?
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6 1 years 4 -
6 1 years 2 -
6 1 years 3 -
6 2 years 3
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Correct Option: D
If the principal be p, the amount = 2p
∴ SI = p
| ∴ Time = | |
| Principal × Rate |
| Time = | = | = 6 | years. | |||
| p × 15 | 3 | 3 |
Second method to solve this question :
| T = | × 100 | |
| R |
| T = | × 100 | |
| 15 |
| T = | year | |
| 15 |
| T = | year | |
| 3 |
| T = 6 | year | |
| 3 |
