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number of gallons consumed

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1st car has fuel efficiency of 15 miles per gallon. Second car has fuel efficiency of 40 miles per gallon. during a week the two cars combined went a total of 1225 miles with a total gas consumpton of 40 gallons. How many gallons were consumed by each car?

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The number of gallons consumed is clarified in this solution.

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Let the number of gallons consumed by Ist car be x and IInd car be y

Equations will be

x + y = ...

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