Correct Answer - Option 4 : Rs. 385
Given:
SP of mask = Rs. 308
Formula used:
Profit% = (Profit/Cost Price) × 100
Loss% = (Loss/Cost Price) × 100
Calculation:
Let the CP of the mask be 'P'.
⇒ P × (88/100) = 305
⇒ P = (305 × 100)/88
⇒ P = 350
Selling Price to make 10% profit
⇒ SP = 350 × (110/100)
⇒ SP = 385
∴ The selling price to make 10% profit is Rs. 385.