Correct Answer - Option 2 : Rs. 1300
Given
Loss = 7%
Selling price = Rs. 1813.5
Concept
Profit = Selling price - Cost price
And loss = Cost price - Selling price
Calculation
Let the cost price of good for Arjun is Rs.x
Profit = Selling price - Cost price
⇒ 50x/100 = 1813.5 - x
⇒ -1813.5 = -x - 50x/100
⇒ -1813.5 = -150x/100
⇒ x = 1209
Selling price of good for Karan is Rs.1209
Cost price of good for Karan is Rs.y
Loss = Cost Price - Selling price
⇒ 7% of y = y - 1209
⇒ 93y/100 = 1209
⇒ y = 1300
Cost price of goods for Karan is Rs. 1300