Question

a person sells an article for rs 550 , gaining 1/10 of its c.p. . find gain%.

Answer 1

c.p= 100
100+p% ×s.p


and just supposed c.p to be x and find your answer

Answer 2

Let CP = Rs. x

SP = Rs. 550

gain = 1/10 of x = Rs. (x/10)