SOLUTION: Mr. Lin buys an article and sells it to Mr. Chen at a gain of 25 % on cost. Mr. Chen sells the article to Mr. Ang at a gain of 20 % on cost. How much money did Mr. Lin pay for the

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Question 964262: Mr. Lin buys an article and sells it to Mr. Chen at a gain of 25 % on cost. Mr. Chen sells the article to Mr. Ang at a gain of 20 % on cost. How much money did Mr. Lin pay for the article, if Mr. Ang pays $ 360 for it?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +c+ = Mr Chen's cost
(1) +c+%2B+.2c+=+360+
(1) +1.2c+=+360+
(1) +c+=+300+
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Let +b+ = Mr Lin's cost
(2) +b+%2B+.25b+=+300+
(2) +1.25b+=+300+
(2) +b+=+240+
Mr Lin paid $240 for th article