SOLUTION: Harry drove for 5 hours on the freeway, then decreased his speed by 20 miles per hour and drove for 4 more hours on a country road. If his total trip was 532 miles then what was h

Question 805640: Harry drove for 5 hours on the freeway, then decreased his speed by 20 miles per hour and drove for 4 more hours on a country road. If his total trip was 532 miles then what was his speed on the freeway in mph?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Make a data table using the unknown freeway speed as variable, r.
Fundamental concept, r*t=d for r=rate, t=time, d=distance.

____________speed______________time____________distance
Freeway_____r___________________5______________(___)
Country_____r-20________________4______________(___)
Total___________________________9_______________532

Can you use this to continue the solution process and finish?
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