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
Approx 0.3267 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.
1 hour 11 minutes.
Less than an hour.
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.
A really long time; about six months at 55 miles per hour.