SSC MTS 5 Aug 2019 Shift 3 Paper

Given:
SP of 1st article = Rs. 180
SP of 2nd article = Rs. 240
Profit% = 20%
Loss% = 20%
Formula used:
Selling price = Cost price × (100 + Profit)%
Selling price = Cost price × (100 - Loss)%
Calculation:
Selling price of article 1 = Rs. 180
⇒ The profit on article 1 = 20%
⇒ Selling price = cost price × (100 + profit)%
⇒ 180 = cost price × 120%
⇒ Cost price = Rs.150
⇒ Selling price of article 2 = Rs. 240
⇒ The loss on article 2 = 20%
⇒ Selling price = cost price (100 – loss)%
⇒ 240 = cost price × 80%
⇒ Cost price = Rs. 300
⇒ The sum of cost prices of the two articles = 150 + 300 = Rs. 450
∴ The sum of cost prices of the two articles is Rs. 450.