SOLUTION: Kathryn drove her rig 3 hours before dawn and 5 hours after dawn. If her average speed was 4 miles per hour more in the dark and she covered 500 miles altogether, then what was her

SOLUTION: Kathryn drove her rig 3 hours before dawn and 5 hours after dawn. If her average speed was 4 miles per hour more in the dark and she covered 500 miles altogether, then what was her

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Question 27691: Kathryn drove her rig 3 hours before dawn and 5 hours after dawn. If her average speed was 4 miles per hour more in the dark and she covered 500 miles altogether, then what was her speed after dawn in miles per hour?

Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
3x+5(x+4)=500
3x+5x+20=500
8x=480
x=60

Hence, the speed after dawn was 60mph.
Paul.
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