SSC CPO 2020 PYQ — Question 103

The correct answer is Option 3 i.e. 920.

Let the market price (MP) be Rs x

First discount at MP = (100 - 20)% of x

⇒ 80 % of x = $\frac{80}{100}\times{x}$ = 0.8x

Second discount = (100 - 20)% of 0.8x  = 80 % of 0.8x

⇒ $\frac{80}{100} \times 0.8x$ = 0.8 × 0.8 = 0.64x

Equivalent discount = x - 0.64x

⇒ 331.20 = 0.36x

⇒ x = $\frac{331.20}{0.36}$

⇒ x = Rs. 920