A) Rs. 400
B) Rs. 800
C) Rs. 960
D) Rs. 1200
Correct Answer: D
Solution :
Suppose, the sum is Rs. x Then, \[\left[ x{{\left( 1+\frac{10}{100} \right)}^{2}}-x \right]=1260\] \[\Rightarrow \] \[x\left[ {{\left( \frac{11}{10} \right)}^{2}}-1 \right]=1260\] \[\Rightarrow \] \[x=\frac{1260\times 100}{21}=6000\] So, the sum is Rs. 6000. Now, simple interest \[=\frac{6000\times 4\times 5}{100}\]= Rs. 1200You need to login to perform this action.
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