SSC CHSL 2020 PYQ — Question 58

SSC CHSL - 14th October 2020 - Shift 3 • Quantitative Aptitude • Q58

An article was marked at Rs.x and sold at a discount of (x – 40)%. If the customer paid Rs.(x – 32), then find the marked price of the article.

Show answer & explanation

Correct answer: D

Explanation

The correct answer is option 4 i.e Rs.80

Understanding Application
We will use the formula of the discount percentage to find the solution.

From the given formula

⇒ Discount(%) = Marked Price - Selling Price / Market Price

In the given question

Marked Price = x

Discount(%) = x - 40

Selling price = x - 32

⇒ (x - 40) / 100 = x - (x - 32) / x

⇒ (x - 40) / 100 = 32 / x

⇒ x2 - 40x - 3200 = 0

By solving the given quadratic equation

⇒ x = 80