Question

if the selling price of 10 pencils is equal to the cost price of 12 pencils the gain per cent is ​

Answer 1

Answer:

If the selling price of 10 pencils is equal to the cost price of 12 pencils the gain percent is ​20%.

Step-by-step explanation:

Let the cost price of 1 pencil = x

Given

Selling Price of 10 pencils = Cost of 12 pencils

Selling Price of 10 pencils$= 12x$

Selling Price of 1 pencil = 12x ÷ 10 = 1.2x

Gain = 1.2x - x = 0.2x

Gain percentage $= gain/cost price \times 100$

Gain percentage $= \frac{0.2}{x} \times 100 = 20%$%

Answer 2

Answer:

Selling Price of 10 pencils = Cost of 12 pencils

Selling Price of 10 pencils= 12x=12x

Selling Price of 1 pencil = 12x ÷ 10 = 1.2x

Gain = 1.2x - x = 0.2x

Gain percentage = gain/cost price \times 100=gain/costprice×100

Gain percentage = \frac{0.2}{x} \times 100 = 20%=

x

0.2

×100=20 %