Question

the selling price of 10 books is equal to the cost price of 12 books. find the profit percent

Answer 1

Answer:

The profit percent is 20%.

Step-by-step explanation:

It is given that the selling price of 10 books is equal to the cost price of 12 books.

$SP\times 10=CP\times 12$

$\frac{SP}{CP}=\frac{12}{10}$

$\frac{SP}{CP}=\frac{6}{5}$

The ratio of SP to CP is 6:5.

Let SP is 6x and CP is 5x.

Formula for profit percent.

$P=\frac{SP-CP}{CP}\times 100$

$P=\frac{6x-5x}{5x}\times 100$

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

$P=20$

Therefore the profit percent is 20%.

Answer 2

Answer:

The profit percent is $20\%$.

Step-by-step explanation:

Given: The selling price of 10 books is equal to the cost price of 12 books.

To find the profit percent.

According to the question:

10 S.P = 12 C.P

S.P/C.P= 12/10

Let SP= 12x and CP= 10x.

Then, profit percent is given by:

Profit$=\frac{(SP-CP)*100}{CP}$

       $=\frac{12x-10x}{10x}*100\\ =\frac{2x}{10x}*100$

      $=20\%$

Therefore,  the profit percent is $20\%$.

#SPJ2