Question 65

The ratio of the selling price to the cost price of a computer is 7:5. What is the profit percentage?

Solution

The ratio of the selling price to the cost price of a computer is 7:5.

Let's assume the selling price and the cost price of a computer are 7y and 5y.

profit percentage = $$\frac{\left(selling\ price\ -\cos t\ price\right)}{\cos t\ price}\times100$$

= $$\frac{\left(7y-5y\right)}{5y}\times100$$

= $$\frac{2y}{5y}\times100$$

= 40%

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