Question

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

Answer 1

Let the cost price 1 article = Re 1
Cost price of x articles = x
S.P of x articles = 20

Gain = 20 - x

[tex]=\ \textgreater \ 25 = ( \frac{20 - x}{x} *100) \\ =\ \textgreater \ 2000 - 100x = 25x \\ =\ \textgreater \ x = 16 \\ [/tex]

Answer 2

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).

∴ $[\frac{20-x}{x} \times100=25]$

⇒ 2000 - 100x = 25x

   125x = 2000  

⇒ x = 16