Question

A man travels a distance of 20 miles at 60 miles per hour and then returns over the same route at 40 miles per hour.What is total time ( in minutes) of his journey?​

Answer 1

Step-by-step explanation:

distance =20 miles

speed= 60 miles per hour

=1 mile per min

time taken=dist/speed

=20 min

second case,

speed=40 miles per hr

=0.67 miles per min

time taken=60/0.67

=89.55 min

therefore total time=89.55+20

=109.55