SOLUTION: A family has two cars. The first car has a fuel efficiency of 30 miles per gallon of gas and the second has a fuel efficiency of 20 miles per gallon of gas. During one particular w
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Question 717935: A family has two cars. The first car has a fuel efficiency of 30 miles per gallon of gas and the second has a fuel efficiency of 20 miles per gallon of gas. During one particular week, the two cars went a combined total of 850 miles, for a total gas consumption of 35 gallons. How many gallons were consumed by each of the two cars that week?
First Car =
Second Car =
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = distance in miles the 1st car travels
= distance in miles the 2nd car travels
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In words:
( miles ) / ( miles/gallon ) = gallons
Using this fact:
Multiply both sides by
------------
For 1st car:
gallons consumed =
gallons consumed =
gallons consumed =
For 2nd car:
gallons consumed =
gallons consumed =
gallons consumed =
gallons consumed =
------------------------
check:
OK
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