SOLUTION: Simon drove from Town A to Town B at an average speed of 55kph. His journey back to town A using the same route took 3 hours longer because he averaged only 40 kph. How long did it

Question 1135013: Simon drove from Town A to Town B at an average speed of 55kph. His journey back to town A using the same route took 3 hours longer because he averaged only 40 kph. How long did it take him to drive from town A to Town B?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = distance between towns in km
Let = time to go from A to B in hrs
= time to go from B to A in hrs
------------------------------------------
Going from A to B
(1)
Going from B to A:
(2)
--------------------------------
Plug (1) into (2)
(2)
(2)
(2)
It took 8 hrs to go from A to B
-----------------------------------
check:
(1)
(1) km
and
(2)
(2) km
OK
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