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Mathematics 29 Online
OpenStudy (anonymous):

A store sells T-shirts for $10 each and jeans for $20 a pair. Anna spends $150 on T-shirts and jeans. She buys x T-shirts and y pairs of jeans. The equation that represents the situation is 10x + 20y = 150 15x + 30y = 150 . If Anna decides to buy only T-shirts and no jeans, she can buy 15 50 T-shirts with the money she has.

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