SOLUTION: Mr. Abou leaves Edmonton traveling north at an average speed of 60 km/h. An hour later Mr. Collins leaves on the same route at 100km/h. How many hours after he left, did Mr. Collin

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Mr. Abou leaves Edmonton traveling north at an average speed of 60 km/h. An hour later Mr. Collins leaves on the same route at 100km/h. How many hours after he left, did Mr. Collin      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 1046860: Mr. Abou leaves Edmonton traveling north at an average speed of 60 km/h. An hour later Mr. Collins leaves on the same route at 100km/h. How many hours after he left, did Mr. Collins overtake Mr. Abou?
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
Since Mr. Abou leaves an hour early, at 60 kmh, then he has a 60 km head start. Let n be the amount of time needed for Collins to catch up. Then:
60+60n=100n
40n=60
n=3/2 hours passing before Collins overtakes Abou. ☺☺☺☺