12 minutes.
Chat with our AI personalities
(10/100) - (10/120) = 1/10 - 1/12 = 6/60 - 5/60 = 1/60 hour i.e. one minute.
You can go 7.5 miles driving at 15 miles per hour for 30 minutes. This is because 30 minutes is 1/2 of an hour, and 1/2 of 15 miles (the distance you travel in an hour) is 7.5 miles.
It depends on the speed you are driving. At 50 miles per hour, you would travel 8 miles in 6.25 minutes.
It will take: 30/40 = 3/4 of an hour
40 minutes