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,

r-20 = 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
58

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