Question

If the selling price of 10 pencils is equal to the cost price of 12 pencils then the gain percent is ?

Answer 1

Step-by-step explanation:

Define x :

Let the cost price of 1 pencil = x

Find the selling price of 1 pencil :

selling price of 10 pencils= cost of 12 pencil

selling price of 10 pencils = 12 x

selling price of 1 pencil = 12x÷ 10 = 1.2 x

Find the grain :

Grain = 1.2 x-x = 0.2x

Find the grain percentage:

Grain percentage= grain/cost price x 100

Grain percentage= (0.2x/x) x 100 = 20%

ANSWER = The profit is 20%