SOLUTION: john and william leave their home traveling in opposite directions on a straight road. John drives 20 miles per hour faster than William. After 4 hours they are 250 miles apart. Wh
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Question 702452: john and william leave their home traveling in opposite directions on a straight road. John drives 20 miles per hour faster than William. After 4 hours they are 250 miles apart. What is John's speed ? What is William's speed?
i tried organizing it in a graph Answer by josgarithmetic(39620) (Show Source):
You can put this solution on YOUR website! Try organizing the information as a table instead of a graph. A picture or a graph can still help to see the situation and label parts.
An attempt at a picture:
Let William's speed be r. John goes at r+20.
John,<---------------------------||--------------->,William
speed: r+20
time: 4 hours
distance: 4(r+20)
________________________________________________For William,
_________________________________________________speed: r
_________________________________________________time: 4 hours, same as John
__________________________________________________distance: 4r
After 4 hours, John and William are 250 miles apart.
Sum of distances from their home is 250 miles.
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