How would you use rates and units to express prices for gasoline?

Answer 1

Every gas station prominently posts the price per gallon.

Example: 3.91/gal

Answer 2

so is this how i use rates and units.

Answer 3

Yes. This web site explains more.

http://www.educationplace.biz/math/mathsteps/6/e/index.html

Answer 4

Describe an application for the use of ratios or proportions that is not mentioned in your text, or describe how an application problem in the text could be useful in your daily life.