One morning, John drove 12 hours before stopping to eat. After lunch, he increased his speed by 10 mph. If he completed a 440-mile trip in 14 hours of driving time, how fast did he drive in the morning?
?
A. 26 mph
B. 30 mph
C. 38 mph
D. 23 mph
E. 33 mph
Answer: B
Mathematics
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