SOLUTION: Jose left the White House and drove toward the recycling plant at an average speed of 40 km/h. Rob left some time later driving in the same direction at an average speed of 48

Question 832678: Jose left the White House and drove toward
the recycling plant 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 Jose. How long did Jose
drive before Rob caught up?
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
Jose left earlier and traveled for more time than did Jose.

____________speed____________time______________distance
Jose________40_______________t+5_______________(____)
Rob_________48________________5_______________ km

They both drove the same distance, so....
____________speed(km/hour)____________time______________distance(kilometers)
Jose________40_____________________t+5_______________(240)
Rob_________48______________________5_______________ km

The equation from the table is ;
Solve for t, and then add 5.
-
Divide left and right by 40,
t+5=6
t=1
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