Homework Help: Algebra Help

Posted by Stacy on Monday, September 17, 2007 at 12:17pm.

I am not sure how to set this problem up..
A car uses 12 L of gasoline in traveling 150 km. At that rate, how
many liters of gasoline will be used in a trip of 400 km?

Algebra Help - Ms. Sue, Monday, September 17, 2007 at 12:22pm
You could set it up as a proportion, with x being the number of liters used in 400 km.

12/150 as x/400

Cross multiply and solve for x.

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