DRDO Multi tasking staff Model paper 6

Short trick∶
Required price = 6000 × 0.8/1.6 = Rs. 3000
Detailed solution∶
Let the cost price of the article be Rs. ‘x’
Profit = 60%
∵ Selling price = Cost price + profit
⇒ Selling price = x + 60% of x = x + 0.6x = 1.6x
Now,
Marked price = Rs. 6000
Discount = 20% of 6000 = 1/5 × 6000 = Rs. 1200
⇒ Selling price = Marked price – Discount = 6000 – 1200 = Rs. 4800
Hence,
⇒ 1.6x = 4800
⇒ x = 4800/1.6 = Rs. 3000
∴ Cost price of article = Rs. 3000