Correct Answer - Option 4 : Rs. 486
Given -
Selling price = Rs. 2500, Loss = 20%, Discount = 10%, profit = 40%
Formula used -
(cost price/marked price) = {(100 - discount)/(100 + profit)}
Solution -
Let the marked price be Rs. x.
⇒ cost price = 2500 × (100/80) = Rs. 3125
⇒ marked price = 3125 × (140/90) = Rs. 486.11
⇒ marked price = Rs. 486
∴ marked price of the radio = Rs. 486