A) 40%
B) 39%
C) 50%
D) 20%
Correct Answer: C
Solution :
Let the CP of each article be Rs. 1. |
For 15 books, the tradesman gives 1 book free |
\[\therefore \] CP of 5 books = Rs. 16 |
\[\therefore \] SP of 15 books\[=16\times \frac{135}{100}\]= Rs.\[\frac{108}{5}\] |
\[\therefore \] SP of 1 book\[=\frac{0.5}{1}\times 100=50%\]= Rs. \[\frac{36}{25}\] |
Now, 96% of marked price\[=\frac{36}{25}\] |
\[\therefore \] Marked price\[=\frac{36\times 100}{25\times 96}=\frac{3}{2}\]= Rs. 1.5 |
\[\therefore \] The required per cant increase |
\[=\frac{0.5}{1}\times 100=50%\] |
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