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Carlos bought two shirts at the mall for $124. He doesn't remember the price of the shirts, but he
remembers that one shirt cost $20 more than the other. How much did he pay for each shirt?

Respuesta :

x + y = 124

x - y = 20

x = 20 + y

20 + 2y = 124

10 + y = 62

y = 52

x - 52 = 20

x = 72

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