Question

A book was sold for Rs. 550 with a profit of 10%. What was its cost price?

Answer 1

Answer:

Hope it's helpful for you

Step-by-step explanation:

SP=550

profit%=10%

let cp be 100 then sp will be 100+10=110

110/100=x

x=550

x=550x100/110=500

x=500

Answer 2

Answer:

$\huge\bold\red{ ❥Answer࿐}$

Selling price of a book = Rs. 550

Profit = 10%

$CP \: = \frac{( SP \times 100)}{(100 + profit)} \\ = \frac{(550 \times 100)}{(100 + 10)} \\ = \frac{55000}{110} \\ = 500$