SOLUTION: Lisa left camp on her bike at noon and rode at an avg rate of 10mph. Morton left in his van at 1;30pm traveling 35mph. how long till morton catches up with lisa?

Question 512113: Lisa left camp on her bike at noon and rode at an avg rate of 10mph. Morton left in his van at 1;30pm traveling 35mph. how long till morton catches up with lisa?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
First find Lisa's head start in miles
mi ( note that 1.5 is time from noon to 1:30 )
Let = distance Morton has to go to catch Lisa
Let = time from when Morton
leaves to when he catches Lisa
-----------------
given:
Morton:
(1)
Lisa:
(2)
----------------
substitute (1) in (2)
(2)
(2) hr
min
Morton catches Lisa in 36 min, or at 2:06 PM
check:
(1)
(1)
(1) mi
and
(2)
(2)
(2)
(2) mi
OK
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