SOLUTION: Ryan drove 380 miles in 6 hours. He drove at an average rate of 70 miles per hour for the first part of the trip. He averaged 60 miles an hour for the second part. For how many hou

SOLUTION: Ryan drove 380 miles in 6 hours. He drove at an average rate of 70 miles per hour for the first part of the trip. He averaged 60 miles an hour for the second part. For how many hou

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Question 985271: Ryan drove 380 miles in 6 hours. He drove at an average rate of 70 miles per hour for the first part of the trip. He averaged 60 miles an hour for the second part. For how many hours did he average 70 miles per hour?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
RT=D

70*q+60*t=380 and time sum must be t+q=6 .
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