SOLUTION: Two dog teams racing the last 77 miles.Team B leaves 13 minutes after Team A.Team A is doing 7 mph.how fast does team B go to pass and get to finish line first.

Question 725185: Two dog teams racing the last 77 miles.Team B leaves 13 minutes after Team A.Team A is doing 7 mph.how fast does team B go to pass and get to finish line first.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Team B needs to go faster than a speed that will
give them a tie right at the finish line
Team A has a head start of

Let = the time for them both to meet
at the finish line after B leaves
Let = B's speed in mi/hr
--------------------------
A's equation:
(1)
B's equation:
(2)
---------------
(1)
(1)
--------------------
(2)
(2)
(2)
Team B needs to go faster than 7.14065 mi/hr
check:
(1)
(1)
OK
(2)
(2)
(2)
OK

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