A rate is a special type of ratio that compares quantities with unlike units of measure. A unit rate is a rate that has been reduced to have a denominator of 1 unit.
20 mi/1 gal
Practice makes perfect
We want to find the unit rate. To do so, we write an equivalent rate with a denominator of 1 unit. Let's do this with the given ratio.
320mi/16gal or 320/16 [5mm]
320 Ă· 16/16 Ă· 16 = 20/1 [5mm]
20 mi/1 gal
The unit rate is 20 miles per gallon.
