Question 42

The cost price of 20 tables is equal to the selling price of 'x' tables. If there is a profit of 25%, then what is the value of 'x'?

Solution

Let say, cost and selling price of each table is c and s.

So,

$$20c=xs.$$

$$\frac{20}{x}=\frac{s}{c}.$$

or,$$\frac{20-x}{x}=\frac{s-c}{c}.$$

According to question,

$$\frac{20-x}{x}=0.25.$$

or,$$20=1.25x.$$

or,$$x=\frac{20}{1.25}=16.$$

D is correct choice.

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