CCommunity
Let the CP of the article be A
Given,
⇒ SP = CP
⇒ "Buy two get three free" means if someone buys 2 article, he gets 3 extra for free
⇒ In terms of price, the customer pays for 2 articles and gets 5 in return
⇒ CP of 5 articles = 5A
⇒ SP of 5 articles = 2A
⇒ Loss = [(CP - SP)/CP] × 100
⇒ Loss = [(5A - 2A)/5A] × 100
⇒ Loss = (3A/5A) × 100
⇒ Loss = 60%