You need the speed in terms of inches per some_unit_of_time:
1 mile = 63360 inches
1 minute = 60 seconds
1 hour = 60 minutes = 60 × 60 seconds = 3600 seconds
20 miles/hour = 20 × 63360 inches/(3600 seconds)
= 352 inches/second
Now you can calculate the time:
time = distance ÷ speed
→ time = 115 inches ÷ 20 mph
= 115 inches ÷ 352 inches/second
= 115/352 seconds
≈ 0.327 seconds
It will take 0.54 hour to cover 38 miles going by 70 miles per hour.
one hour if you are going ninty miles per hour
3 hours to drive 165 miles going 55 miles per hour.
It depends entirely on how fast you are going. If you are going a mile an hour, it will take you eleven hours to drive eleven miles. If you are going eleven miles an hour, it will only take you an hour.
Less than an hour.
1 hour 11 minutes.
If you're going 40 miles per hour, it will take 1 hour. If you're going 20 miles per hour, it will take 2 hours. If you're going 10 miles per hour, it will take 4 hours. If you're going 80 miles per hour, it will take 30 minutes.
16
going 60 miles an hour
1 hour 7 minutes.
1 hour 30 minutes.
If a car is going at a constant speed of 80mph (miles per hour) it will take 1 hour.