A family has two cars. The first car has a fuel efficiency of 25 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 65 gallons. How many gallons were consumed by each of the two cars that week?

asked by jessica

5 years ago

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1 answer

Let the two cars' distances be
first: x
second: y

Since mi/gal * gal = mi,
x + y= 2000
x/25 + y/40 = 65

answered by oobleck

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Question

A family has two cars. The first car has a fuel efficiency of 25 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 65 gallons. How many gallons were consumed by each of the two cars that week?

1 answer

Let the two cars' distances be
first: x
second: y

Since mi/gal * gal = mi,
x + y= 2000
x/25 + y/40 = 65

oobleck · Answer

Let the two cars' distances be first: x second: y Since mi/gal * gal = mi, x + y= 2000 x/25 + y/40 = 65