SOLUTION: John left his house and drove toward Tampa at an average speed of 40 km/h. Rob left some time later driving in the same direction at an average speed of 48 km/h. After drivin

Algebra ->  Rate-of-work-word-problems -> SOLUTION: John left his house and drove toward Tampa at an average speed of 40 km/h. Rob left some time later driving in the same direction at an average speed of 48 km/h. After drivin      Log On


   

Question 590740: John left his house and drove toward
Tampa at an average speed of 40
km/h. Rob left some time later driving in
the same direction at an average speed of 48
km/h. After driving for five hours Rob
caught up with John. How long did John
drive before Rob caught up?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
40*(5+t)=48*5
40*5+40t=48*5
40t=8*5
40t=40
t=1 hour
John left one hour before Rob did.
It took John 6 hours to meetup with Rob.
Rob drove 5 hours.