Question

the selling price of an article is 6/5 of its cost price. whats its gain percent?

Answer 1

Let the cp be x.
SP = 6/5 of x
= 6x/5
Profit = SP - CP
= 6x/5- x
= x / 5
Profit percent = profit / cp * 100
= (x/5) / x *100
Ans.= 20%

Answer 2

Solution :

Let the cost Price of the TV = Rs x

Selling price = $\frac{6x}{5}$

∵ Gain = Selling price - Cost price

Gain = $\frac{6x}{5} - x$

        =  $\frac{(6x - 5x)}{5}$

        = $\frac{x}{5}$

Gain percent = $\frac{(g \times 100)}{CP}$

                      = $\frac{\frac{x}{5} \times 100}{x}$

                      = 20%