By selling two articles for ₹800, a person gains the cost price of three articles. The profit percent is:

Cp of 2 =2 Sp of 2=5 5+3=3×100/2=150

Given that S.P of 2 articles = 800 let C.P of each article be 'x', therefore C.P of 2 articles = 2x according to the question, 800-2x= 3x x=160 profit= 800- 320= 480 profit%= (800-320)/320= 480/320= 150%