| A certain amount earns simple interest of Rs. 1750 after 7 yr. Had the interest been 2% more, how much more interest would it have earned? |
A) Rs. 35
B) Rs. 350
C) Rs. 245
D) Cannot be determined
E) None of the above
Correct Answer: D
Solution :
| Let the principal be Rs. x and rate of interest be r% |
| Case I \[\frac{x\times r\times 7}{100}=1750\] |
| \[\Rightarrow \] \[x\times r=\frac{1750\times 100}{7}=\text{Rs}\text{.}\,\,\text{25000}\] |
| Case II \[\text{SI}=\frac{x\times (r+2)\times 7}{100}\] |
| which cannot be determined with the help of giver information. |
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