Question

The cp of 21 articles is equal to sp of 18 articles.Find gain or loss %

Answer 1

Answer:

Let the CP of one article = Rs. C and SP = Rs. S

21C = 18S

C = (6/7)S

C < S = Profit

Formula : SP = (100 + P% / 100) CP

S = (100 + P% / 100 ) C

S/C = (100 + P% / 100 )

7/6 = (100 + P% / 100 )

7/6 X 100 = 100 + P%

700/6 - 100 = P%

100/6 = P %

P % = 16.67