A) Rs. 23
B) Rs. 57.50
C) Rs. 52.50
D) Rs. 80.50
Correct Answer: B
Solution :
Total money spent by Aneesh \[=\frac{3}{7}+\frac{1}{2}\times \left( 1-\frac{3}{7} \right)=\frac{3}{7}+\frac{2}{7}=\frac{5}{7}\] Amount left with him = Rs. 23 \[\therefore \] \[\left( 1-\frac{5}{7} \right)=\] Rs. \[23\Rightarrow \frac{2}{7}=\]Rs. 23 \[\Rightarrow \] \[\frac{2}{7}\times \frac{7}{2}=\] Rs. \[23\times \frac{7}{2}\Rightarrow 1=\] Rs. \[\frac{161}{2}\] \[\therefore \]Total money Aneesh had = Rs. \[\frac{161}{2}\] \[\therefore \] Amount he spent \[=\frac{5}{7}\times \] Rs. \[\frac{161}{2}\] = Rs. \[\frac{5\times 23}{5}=\] Rs. \[\frac{115}{2}=\] Rs. 57.50
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