A) Rs. 5000
B) Rs. 50000
C) Rs. 10000
D) Rs. 1000
Correct Answer: B
Solution :
When difference between the compound interest and simple interest on a certain sum of money for 2 yr at r% rate is Rs. x, then the sum is given by \[x{{\left( \frac{100}{r} \right)}^{2}}\] Here, \[x=Rs.\,80,\] \[r=40%\] \[\therefore \] Required sum \[=80{{\left( \frac{100}{4} \right)}^{2}}\] \[=80\times 25\times 25\] \[=Rs.\,50000\]You need to login to perform this action.
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