SOLUTION: Candice Leaves on a road trip driving at 25 miles per hour . Four hours later , her sister leaves from the same location driving at 50 miles per hour . How long after Liz leaves ho
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Question 979088: Candice Leaves on a road trip driving at 25 miles per hour . Four hours later , her sister leaves from the same location driving at 50 miles per hour . How long after Liz leaves home will she catch up to Candice ? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Candice has a 4 hr head start on Liz
In that 4 hrs, Candice has traveled: mi
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Start a stop watch when Liz leaves
Let = the distance in miles that
Liz travels until she catches Candice
Let = time in hrs on the stop watch
when Liz catches Candice
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Candice's equation:
(1)
Liz's equation:
(2)
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Substitute (2) into (1)
(1)
(1)
(1)
4 hrs after Liz leaves, she will catch Candice
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check:
(2)
(2)
(2) mi
and
(1)
(1)
(1)
(1) mi
OK
