
Victor K. answered 10/20/15
Tutor
5.0
(635)
Top Rated Professional Organic Chemistry Tutor
If you set up the distance (d) as a time sliding (t) by velocity (V), and express velocity in flags per second, you'll end up with:
V(allie) = 1/6; V(alex)=1/5; t(allie) = t(alex) = t; d(allie) = d(alex) = d;
d = t * 1/6 + 6 * 1/6 = t * 1/5
The only thing left--is to solve it for t.