SSC CHSL 2021 PYQ — Question 56

The correct answer is Option 3 i.e. 37: 27%.

Formula Used:

$S.P. = M.P. \times{100 - D\over 100}$

Explanation:

Let the M.P. of an article be 100x

According to the given question,

$S.P. = 100x \times{100 - 18\over 100} \times {100 - 15\over 100} \times {100 - 10\over 100}$

⇒ $S.P. = 100x \times{82\over 100} \times {85\over 100} \times {90\over 100}$

⇒ S.P. = 62.73x

Now, overall discount = 100x - 62.7x = 37.27x

Discount % = (37.27/100)× 100 = 37.27%

Hence the required answer is 37.27%.