Fruit Punch P contains 40% juice, Fruit Punch Q contains 30% juice, and Fruit Punch R contains 55% juice. If gallons of Punch P,
gallons of Punch Q, and
gallons of Punch R are mixed to give
gallons of fruit punch that contain 45% juice, what is
in terms of
and
?
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数学PS
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A
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B
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C
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D
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E
显示答案
正确答案: A