SOLUTION: One morning, John drove 5 hours before stopping to eat. After lunch, he increased his speed by 10 mph. If he completed a 310-mile trip in 8 hours of driving time, how fast did he d
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-> SOLUTION: One morning, John drove 5 hours before stopping to eat. After lunch, he increased his speed by 10 mph. If he completed a 310-mile trip in 8 hours of driving time, how fast did he d
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Question 323096: One morning, John drove 5 hours before stopping to eat. After lunch, he increased his speed by 10 mph. If he completed a 310-mile trip in 8 hours of driving time, how fast did he drive in the morning? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = the distance he drove in AM
Let = his speed in the AM hrs driving time in PM
given:
By substitution:
He drove 35 mi/hr in the AM
check:
OK
