Two cyclists are 200 miles apart when they start racing toward each other. If their speeds are 12 mph and 6 mph, how much time will pass before they are twenty miles apart?

Answer 1

When the two cyclists start racing toward each other, the total speed at which they are moving towards each other is 12 + 6 = <<12+6=18>>18 mph.
To cover the remaining twenty miles, they will take 20/18 = <<20/18=1.1111111111111112>>1.11... hours.
This is equal to 1 hour and 0.11 x 60 = <<1*60+0.11*60=6.6>>6.6 minutes.
Thus, the time it will take before they are twenty miles apart is 1 hour and 6.6 minutes. Answer: \boxed{1 \text{ hour and 6.6 minutes}}.