It depends on your average speed
20/12=1 2/3 hours. Or 1 hour, 40 minutes.
Only 3 people can ride on a 3 person bicycle at once.
40min=(2/3)hrD=rt14=(2/3)r21mph=rJeremy can ride 21miles in one hour.
1. Fortunately you carry a tire patch kit and bicycle pump with you, so you repair your tire. 2. It is not impossible to walk 5 miles if you have to. 3. You take out your cell phone and call a taxi to take you home. 4. Hitchhike. 5. You ride the bicycle anyway; you get a bumpier ride with a flat tire, but the bicycle still carries you.
Nine minutes.
3 halves, or 1.5, or 1 1/2 minutes
3 hours 30 minutes.
Distance = Rate * Time or, for our purpose Time = Distance/Rate Time = 4 miles/12 mph = ~ 1/3 of an hour----call it 20 minutes
18 miles on the bicycle, 60 miles on the motorboat.
On the flat, say 3-10 mph.
57 miles
If the bicycle travels 4 miles for the car's 30 miles, then if you divide both numbers by 3 you'll see that the bicycle travels 1 and 1/3rd miles for each 10 miles that the car travels. So, if the car travels a further 10 miles (and has now gone 40 miles) the bicycle will travel a further 1 and 1/3rd miles and its total travelled would be 5 and 1/3rd miles.