Posted by Sheree on Wednesday, March 27, 2013 at 11:56pm.
Harry drove for 6 hours on the freeway, then decreased his speed by 20 miles per hour and drove for 5 more hours on a country road. If his total trip was 648 miles, then what was his speed on the freeway?

Math  Wayne, Thursday, March 28, 2013 at 12:00pm
His initial speed was 68mph. Using Distance = Rate * Time, we get:
Let r = speed for 6 hours,
r20 = speed for 5 hours, so:
648 = 6r + 5*(r  20).
Hope this wasn't in Wi because the max legal speed limit is 65mph!

Math  Anonymous, Sunday, June 5, 2016 at 3:36pm
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