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:
15
16
18
25
Explanation:
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. $\left(20 - x\right)$.
$\therefore \left(\dfrac{20 - x}{x} \times 100 = 25\right) $
$\Rightarrow$ 2000 - 100$ x $ = 25$ x $
125$ x $ = 2000