The task is to generate the correct answer for a given math problem.
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Question: Problem: by selling an article for $ 225 a person gains $ 75 . what is the gain % ?

Answer: 50 %


Question: Problem: if x and j are integers and 2 x – j = 11 , then 4 x + j can not be

Answer: 17


Question: Problem: a shopkeeper loses 15 % , if an article is sold for rs . 102 . what should be the selling price of the article to gain 20 % ?

Answer:
rs . 144