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Mathematics, 02.12.2019 08:31 erbnichole

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a family has two cars. the first car has a fuel efficiency of 20 miles per gallon of gas and the second has a fuel efficiency of 40 miles per gallon of gas. during
one particular week, the two cars went a combined total of 2000 miles, for a total gas consumption of 70 gallons. how many gallons were consumed by each of
the two cars that week?
co explanation

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