SSC MTS 6 Aug 2019 Shift 2 Paper

Tips & Tricks
Let the selling price be 100x
⇒ Profit = 20% of the selling price
⇒ Profit = 20% × 100x = 20x
⇒ Cost price = selling price – Profit
⇒ Cost price = 100x – 20x = 80x
⇒ Profit% on the cost price = (profit/cost price) × 100
⇒ Profit% on the cost price = (20x/80x) × 100
⇒ Profit% on the cost price = 25%
∴ Profit% on the cost price is 25%.