Which is a unit rate?
47¢ for 2 pens
20 gallons for 2 hours
15 hours for 3 months
18 miles driven in a week

Answers

The answer is 18 miles driven in a week, because a unit rate is how many units of the first type of quantity corresponds to one unit of the second type of quantity.

The answer is 18 miles driven in a week, because a unit rate is how many units of the first type of quantity corresponds to one unit of the second type of quantity.

hope this helps!