数学,写过程,谢谢大家啦
thecostsoffruitjuiceAandBare$20/Land$12/Lrespectively.IfAandBaremixedintheratiox:ybyv...
the costs of fruit juiceA andB are $20/L and $12/L respectively.If A and B are mixed in the ratio x: y by volume so that the cost of the mixture is $15.2/L,findx: y
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