Question 504365
Time = ? (in Minutes)
Distance = 60 miles
Speed =  40 miles per hour
or 
Speed = 40 miles per (1*60)minute [ To change hour into minutes we have to multiply by 60)
Now
Speed = 40miles/60 minutes
Speed = 2miles/3 minutes

Formula for calculating time

Distance = Speed * time
60=2/3 * time
60 (3/2)=time
30 * 3 = time
time = 90minutes