Question 75

The selling price of a bulb is half of its cost price. What is the loss percentage?

Solution

The selling price of a bulb is half of its cost price.

Let's assume the cost price of a bulb is 2y.

selling price of a bulb = $$\frac{1}{2}\times2y$$ = y

loss percentage = $$\frac{\left(cost\ price-selling\ price\right)}{cost\ price}\times100$$

= $$\frac{\left(2y-y\right)}{2y}\times100$$

= $$\frac{y}{2y}\times100$$

= 50%

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