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Q.

The cost price of 20 articles is the same as the cost price of x articles. If the profit is 25%, then the value of x is

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a

15

b

16

c

18

d

25

answer is B.

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Detailed Solution

Concept: Using the gain percentage formula, determine the selling price in terms of cost prices. Consequently, create a linear equation in x using the question's thesis. Do the x math. In addition, you may utilize the formula for gain percentage to build a linear equation in x and then solve for x to determine the selling price in terms of cost price and x.
Given that each article's C.P. is Re, 1 C.P. of x articles equals Rs. x.
Selling pairs of x articles = Rs.20
Profit =

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Hence, the correct answer is option 2.

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