SOLUTION: a family has two cars. The first car has a fuel efficiency of 35 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. During one particular w

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Question 1117934: a family has two cars. The first car has a fuel efficiency of 35 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. During one particular week, the two cars went a combined total of 1225 miles, for a total gas consumption of 55 gallons. How many gallons were consumed by each of the two cars that week?
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
R, fuel efficiency
V, volume of fuel
D, distance
RV=D

                Fuel Efficiency      Volume         Distance

FirstCar          35                  v              35v

SecondCar         15                 55-v           15(55-v)

Totals                                 55             1225

v, the unknown volume of fuel the first car used


Solve this equation and then evaluate 55-v.

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POSSIBLE STEPS




-----------first car
-
---------second car
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