140/2¾ = 140 x 4/11 = 50.91 mph
4 miles in 18 minutes = 13.33... miles per hour.
20 miles per hour.
There are 60 seconds per minute and 60 minutes per hour; therefore, there are 60 X 60 = 3600 seconds per hour. The stated rate is 1/45 mile per second. 1/45 X 3600 = 80 miles per hour.
300 miles per hour.
Distance = Rate divided by time Rate = 120miles per hour Time = 10minutes = 10 minutes x 1 hour/60 minutes = 0.167 hour Distance = 120mph/0.167 hour = 718.56 miles Answer: For the rate of 120 mph, you'll go to 718.56 miles in 10 minutes.
Rate is units divided by time. For instance, speed is a rate. If you're driving, moving at 100 miles per hour (100 miles / hour ) then 100 mph is your rate of speed.
It will take you 11 minutes because at 60/mph you're driving at the rate of 1 mile per minute. (60 miles in 1 hour = 60 miles in 60 minutes.)
100 miles per hour
Based on the formula: rate x time=distance So, we have: rate x .35hours (which is 21 minutes) = 2.43 miles then, rate = 2.43/.35, which equals 6.943 miles per hour.
If you go 20 miles in 6 minutes, you go 20 miles in 1/10th of an hour. At that rate, you will go 10 times 20 miles in one hour, or 200 miles per hour.
Dividing the speed in miles per hour by the number of minutes in one hour gives 66/60 = 1.1 miles per minute.
Distance = Rate * Time or, for our purposes Rate = Distance/Time Rate = 12 miles/8 minutes = 1.5 miles per minute -----------------------------------to get a real world sense of this 1.5 miles/minute (60 minutes/1 hour) = 90 miles an hour ---------------------------