SOLUTION: one morning john drove 5 hours before stopping to eat. after lunch, he increased his speed by 10 mph in order to complete a 430-mile trip in 8 hours of driving time. how fast did h

Question 901326: one morning john drove 5 hours before stopping to eat. after lunch, he increased his speed by 10 mph in order to complete a 430-mile trip in 8 hours of driving time. how fast did he drive in the morning?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi

Let x represent morning rate of speed. Total of 8hrs traveling      

5r + 3(r+10mph) = 430mi

 8r = 400

  r = 50mph, how fast he drove in the morning 

RELATED QUESTIONS

One morning, John drove 5 hours before stopping to eat. After lunch, he increased his... (answered by josmiceli)
One morning, John drove 5 hours before stopping to eat. After lunch he increased his... (answered by rajagopalan)
One morning, John drove 11 hours before stopping to eat. After lunch, he increased his... (answered by Nihal@SriLanka)
One morning, John drove 5 hours before stoping to eat. After lunch, he increased his... (answered by ankor@dixie-net.com)
One morning Madeline drove 5 hours before stopping to eat. After lunch, she increased her  (answered by stanbon,josmiceli)
One morning, Justin drove 5 hours before stopping to eat lunch at Chick-fil-A. After... (answered by ikleyn)
One morning, Justin drove 2 hours before stopping to eat lunch at Pizza Hut. After lunch,  (answered by nshah11)
One morning, Justin drove 3 hours before stopping to eat lunch at Pizza Hut. After lunch,  (answered by Menjax)
One morning, Justin drove 2 hours before stopping to eat lunch at Chick-fil-A. After... (answered by ikleyn)