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Question

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

Options:
A .  15
B .  16
C .  18
D .  25
Answer: Option B

Let C.P. of each article be Re. 1 C.P. of x articles = Rs. x.


S.P. of x articles = Rs. 20.


Profit = Rs. (20 - x).


So, \(\left(\frac{20-x}{x}\times100=25\right)\)


 2000 - 100x = 25x


125x = 2000


 x = 16.


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