Question

The cost price of 10 articles is equal to the selling price of a 9 article• find the profit per cent​

Answer 1

Answer:

11.11%

Step-by-step explanation:

Let C.P. of one article be x.

C.p. of 10 articles=10x

S.P. of 9 articles =10x

S.P. of 1 article=10x/9

Profit=10x/9-x

=x/9

Profit%=x/9/x*100

=11.11%