Question 433368
Mr. Ang paid $360 for the article. If Mr. Chen made a 20% profit, then it cost him
360/1.20, or $300. Likewise, Mr. Lin made 25% profit so it cost him 300/1.25 or $240.  Mr. Lin paid $240 originally for the article. You can also find this by 360/(1.20x1.25).