SOLUTION: A man completing a 40 km trip finds that by traveling one more km per hour, he could have made the journey in 2 hours' less time. At what speed did he actually travel?

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Question 893586: A man completing a 40 km trip finds that by traveling one more km per hour, he could have made the journey in 2 hours' less time. At what speed did he actually travel?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Same distance one way or the other.
r%2At=40=%28r%2B1%29%28t-2%29, which is actually two equations.

highlight_green%28rt=40%29 and highlight_green%28%28r%2B1%29%28t-2%29=40%29