Mathematics · Profit and Loss

A trader purchases two types of articles, A and B. He marks article A at 40% above its cost price and article B at 20% above its cost price. He sells 2 articles of type A and 3 articles of type B. On the total marked price, he gives a discount of 10% and makes an overall profit of 20%. If the cost price of article A is 50 more than the cost price of article B, find the cost price of article B.