An oval shaped walking path at a local park is 3/4 of a mile long. Amber walked 3 laps and took 40 minutes.what is the unit rate in miles per hour.

Question

An oval shaped walking path at a local park is 3/4 of a mile long. Amber walked 3 laps and it took her 40 minutes. Find the unit rate in miles per hour.

Answer 1

The path is 3/4 of a mile long, and Amber walks 3 laps in 40 minutes. First we need to know how far she walked

 

3/4 * 3/1= 9/4 or 2.25miles

 

40 minutes is 2/3 of an hour, so we either set up a proportional equation or determine how far she walks in 1/3 of an hour and multiply that answer by 3.

 

2.25/x = 2/3

2x= 6.75

x= 3.375 miles/hour

 

other method:

 

2.25/2= 1.125 miles  (1/2 of 2/3)

1.125 *3= 3.375 miles/hour

 

 

Answer 2

So total walked is 2.25 miles in 40 minutes which is 3.375 miles per hour