Question

ActivitySelma uses a jogging trail that runs through a park near her home. The trail is a loop that is of a mile long. On Monday, Selma ran the loop in 3of an hour. What is Selma's unit rate in miles per hour for Monday's run?In this activity, you will use the common denominator method to calculate a unit rate that involves fractions. Answer the questions that follow tocalculate Selma's unit rate in miles per hour.Part AAccording to the question, the unit rate is to be expressed in which units?

Answer 1

The trail is a loop that is 3/4 of a mile long

Selma ran the loop 1/6 of a hour

so, the unit rate = distance/time = (3/4 miles) / (1/6 hour) =

so, the unit rate = 4.5 miles/hour

express as fraction = (9/2) miles/hour