SSC Sample Paper Mock Test-12 SSC CGL Tear-II Paper-1

A tradesman gives 4 % discount on the marked price and gives 1 article free for buying every 15 articles and thus gains 35 %. The marked price is increased above the cost price by

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

\[=\frac{0.5}{1}\times 100=50%\]