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At what rate of simple interest per annum will a sum become 7/4 of itself in 4 years ?
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- 18%
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18 1 % 4 -
18 3 % 4 -
18 1 % 2
Correct Option: C
Let the principal be p.
According to question ,
| ∴ Principal + SI = | |
| 4 |
| ∴ SI = | - p = | ||
| 4 | 4 |
| Rate = | |
| Principal × Time |
| Rate = | = 18 | % | ||
| 4 × p × 4 | 4 |
Second method to solve this question :
| R = | × 100% = | × 100% | ||
| 16 | 16 |
| R = | % | |
| 4 |
| R = 18 | % | |
| 4 |
