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:?

Answer 1

METHOD 1:

Let cost price of one article =1

S.P. of x articles = C.P. of 20 articles =20

As C.P. of x articles =x

=> x × 125/100=20

=> x=16

METHOD:

Profit percentage =(x−y)/100y

=> 25=(20−x)100/x

=>x = 4(20−x)
 
=> 5x=80

=> x=16