A new automobile engine can run on a mixture of gasoline and a substitute fuel. If gas costs $ 2.75 $ 2.75 per gallon and the substitute costs 60 60 ¢ per gallon, what percent of a mixture must be substitute

A new automobile engine can run on a mixture of gasoline and a substitute fuel. If gas costs $ 2.75 $ 2.75 per gallon and the substitute costs 60 60 ¢ per gallon, what percent of a mixture must be substitute to bring the cost down to $ 2.00 $ 2.00 per gallon?

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A new automobile engine can run on a mixture of gasoline and a substitute fuel. If gas costs $ 2.75 $ 2.75 per gallon and the substitute costs 60 60 ¢ per gallon, what percent o…

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