Question

if selling price of 20 articles is equal to cost price of 30 articles,find loss or gain % of each articles.

Answer 1

Let S.P of 1 article be Rs. 1
Therefore, S.P of 20 articles = Rs. 20
Cost price of 30 articles = Rs. 20
Therefore, C.P of 20 articles is 20/30 x 20 = 40/3
Loss = C.P - S.P = 20 - 40/3 = 20/3
Loss % = (20/3)/20 x 100 = 33.3 %