Correct Answer - Option 2 : Rs. 150
Given:
The Ram bought two pens = Rs. 225
Concept:
The loss = Cost price - Selling price
The profit = Selling price - Cost price
Calculation:
Let us assume cost price of the two pens are X and Y respectively
⇒ X + Y = 225 ----(1)
⇒ The selling price of the first pen = 0.7X
⇒ The selling price of the second pen = 1.4Y
⇒ The selling price of the pens are the same
⇒ 0.7X = 1.4Y
⇒ X = 2Y ----(2)
⇒ By solving both equations (1) and (2)
⇒ X = 150, and Y = 75
⇒ The cost price of the pen which is sold at loss = X = 150
∴ The required result will be 150.