Correct Answer - Option 4 : Rs. 650
Given:
Selling price of car = Rs. 400
Loss % = 20%
Formula used:
CP = SP × 100 / (100 + P%)
SP = CP × (100 + P %) / 100
Where P = Profit
Calculations:
At 20% loss
⇒ SP = Rs. 400
⇒ CP × 80% = 400
⇒ CP = Rs. 500
For 30% profit
⇒ SP = CP × 130%
⇒ SP = 500 × 130/100 = Rs. 650
∴ The selling price of car will be Rs. 650.