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Greg's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Greg $5.75 per pound, and type B coffee costs $4.65 per pound. This month, Greg made 154 pounds of the blend, for a total cost of $790.90 . How many pounds of type B coffee did he use?

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5.75x + 4.65y = 790.90
x + y = 154
User Mirandy
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