Depends on the speed your cycling at...
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.
16/10 hours 1.6 hours
7 miles / 10 mph = 7/10 hour, or 42 minutes
3 hours
15 min.
10 hours
10 minutes for every 100 miles
It takes 15 minutes to go 10 miles at 40 miles per hour.
At 55mph about 10 hours
3 hours
24 minutes.
10 mins