Question

a book was sold for rs 550 with a profit of 10% ? what is it's cost price ?​

Answer 1

Answer:

Cost price is 500/-

Step-by-step explanation:

if profit% = 10%  S.P. = 550/- ⇒C.P. =?

profit% = $\frac{S.P.-C.P.}{C.P.} *100%$

$\frac{1}{10} = \frac{550-C.P.}{C.P.}$

C.P. = 5500-10 C.P.

11 C.P. = 5500

C.P. = 500

Answer 2

Answer:

hope it helps you

Step-by-step explanation:

if profit% = 10%  S.P. = 550/- ⇒C.P. =?

profit% =  

C.P. = 5500-10 C.P.

11 C.P. = 5500

C.P. = 500