Question

Darius drove from his house to his mother’s house,
which is 60 miles away. On the way there, he drove
60 miles per hour (mph). But because of construction on
the way home, he was able to drive only 30 mph. What
was Darius’s average speed for the entire trip?

Answer 1

Answer:

Darius drove from his house to his mother’s house,

which is 60 miles away. On the way there, he drove

60 miles per hour (mph). But because of construction on

the way home, he was able to drive only 30 mph.

Darius’s average speed for the entire trip = 40 Miles/Hr

Step-by-step explanation:

Distance one Way = 60 Miles

Speed while going = 60 Miles/Hr

Time take = 60/60 = 1 hr

Distance while returning is same = 60 Miles

Speed while returning = 30 miles/Hr

Time Taken = 60/30 = 2 hr

Total Distance Covered = 60 + 60 = 120 Miles

Total Time Taken = 1 hr + 2hr = 3 hr

Average speed for entire Trip =  120/3 = 40 Miles/Hr