SOLUTION: Jackie and Johnny are traveling from Seattle to San Diego. Jackie who is driving 80 mph caught up to Johnny who had a one hour Headstart and is driving 70 mph. How far were the
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Question 1109107: Jackie and Johnny are traveling from Seattle to San Diego. Jackie who is driving 80 mph caught up to Johnny who had a one hour Headstart and is driving 70 mph. How far were the two from their starting point when Jackie caught up to Johnny Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Johnny's headstart in miles is: mi
Start a stopwatch when Jackie leaves
Let = the time in hrs on the stopwatch
when Jackie catches up with Johnny
Let = the distance Jackie travels
until he catches up with Johnny
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Johnny's equation:
(1)
Jackie's equation:
(2)
-------------------------
(1)
Plug (2) into (1)
(1)
(1)
(1) hrs
and
(2)
(2)
Both were 560 mi from the starting point
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check:
(1)
(1)
(1)
(1)
OK
