SSC CHSL 2021 PYQ — Question 64

The correct answer is option 1 i.e. 29.6%

Explanation:

Let the original selling price b x.

According to the given question,

Cost Price = ${7x \over 12} \times {100 \over 84}$ = $25x \over 36$

Now, the selling price = 90% of x = $9x \over 10$

So, the profit = $9x \over 10$ -  $25x \over 36$ = $37x \over 180$

Now, profit % = $\frac{​​{37x \over 180}}{{25x \over 36}} \times 100$ = $148 \over 5$ = 29.6%

Hence the required answer is 29.6%.