John weighs 220 pounds when he starts exercising. He manages to lose 10% of his body weight. He then gains back 2 pounds. How much does he weigh at the end? Give me reasons, before answering the question
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He lost 220 * .1 = 22 pounds. So after gaining some weight back he was 22 - 2 = 20 pounds lighter than before. So his weight is 220 - 20 = 200 pounds. So the final answer is 200.
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