Question

Mateo's family took a trip to visit some relatives. They drove for 2 1/2 hours at 55 mph to get there but the trip home took them 15 minutes longer. At what speed were they traveling on the drive home?

Answer 1

Answer:

 Speed they were traveling on the drive home = 50 mph

Step-by-step explanation:

Trip to relatives home:

   Speed = 55 mph

   Time taken = 2 1/2 hours = 2.5 hours

   Distance = Speed x Time taken = 55 x 2.5 = 137.5 miles.

Trip to drive home:

   Time taken = 2 1/2 hours + 15 minutes = 2 3/4 hours = 2.75 hours

   Distance  = 137.5 miles.

   Speed = Distance / Time = 137.5/2.75 = 50 mph

Speed they were traveling on the drive home = 50 mph