SOLUTION: Gerry left at 4:00pm. traveling at 55 mph. Joe left one hour later and passed gerry at 9:00pm. How fast was Joe traveling?

Question 1069504: Gerry left at 4:00pm. traveling at 55 mph. Joe left one hour later and passed gerry at 9:00pm. How fast was Joe traveling?
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!

Time is in quantity, not shown as time on the clock:

           SPEED      TIME      DISTANCE
Gerry       55         5          d
Joe          r        5-1=4       d

Gerry's data easily gives the distance when Joe passed him.

Joe's speed can be found now knowing d.

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