Question

Which rate is a unit rate?
A. 1 week
_______
7 days
B. 34 miles
________
1 gallon
C. 40 hours
_________
5 days
D. 48 minutes
___________
4 quarters

Answer 1

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. If you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

Given this definition we can see that an easy give away would be that the second unit (feet per SECOND, miles per HOUR) is going to be singular.

With this in mind, only one of your options qualifies as a unit rate.

B. 34 miles / 1 gallon