Question : The selling price of a radio was Rs. 255 when a 15% discount was allowed. Then, the marked price of the radio was _______.
Option 1: Rs. 275
Option 2: Rs. 300
Option 3: Rs. 350
Option 4: Rs. 400
Correct Answer: Rs. 300
Solution :
Given: The selling price was Rs. 255 and the discount was 15%.
$\text{SP}=\text{MP}\times \frac{100-\text{Discount}\%}{100}$, where SP = selling price, MP = marked price
$⇒255=\text{MP}\times \frac{100-15%}{100}$
$⇒255=\text{MP}\times \frac{85}{100}$
$⇒\text{MP}=\frac{255\times 100}{85} = 300$
So, the marked price is Rs. 300.
Hence, the correct answer is Rs. 300.
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