SOLUTION: A man drives at a speed of 40 miles/hr. His wife left 30 mins. late with 50 miles/hr speed. when will they meet
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Question 495201: A man drives at a speed of 40 miles/hr. His wife left 30 mins. late with 50 miles/hr speed. when will they meet
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The man has a head start of:
mi
------------
Start a stopwatch when the wife leaves
Let = her distance to when they meet
For man:
(1)
For wife:
(2)
-----------------
Substitute (2) into (1)
(1)
(1)
They will meet in 2 hrs
check answer:
(1)
(1)
(1)
and
(2)
(2)
(2)
OK
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