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: Choose the most appropriate option:
A) 15
B) 16
C) 18
D) 25
E) 27
Explanation :   Let the cost price of 1 article be z.   So, the cost price of 20 article = 20z ------------------------- (1)   Selling Price of 20 articles = 20z + 25% of 20z = 25z   =&gt; Selling Price of 1 article = 25z/20 = (5/4)*z   =&gt; Selling Price of x articles = (5/4)*z*x ------------------------- (2)   Given that Selling Price (S.P.) of x articles = Cost Price (C.P.) of 20 articles   =&gt; (5/4)*z*x = 20z =&gt; x = 16   Answer : 16
<result>B</result>
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: