Correct Answer - Option 4 : 25%
Given
Cost price of 10 mobiles = Selling price of 8 mobiles
Formula used
Gain % = (Gain/Cost price) × 100
Calculation
Cost price of 10 mobiles = Rs. 1,00,000
Cost price of 1 mobile = Rs. 10,000
Selling Price of 8 mobiles = Rs. 1,00,000
Selling price of 1 mobile = Rs. 12,500
Profit on 1 mobile = Rs. 12,500 - Rs. 10,000
⇒ Rs. 2,500
Profit % = (2500/10,000) × 100
⇒ 25%
∴ Gain percent is 25%
