SOLUTION: A trucker drove for 4 hours before he encountered icy road conditions. he reduced his speed by 20mph and continued driving for 3 hours. find his average speed during the first part
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Question 902774: A trucker drove for 4 hours before he encountered icy road conditions. he reduced his speed by 20mph and continued driving for 3 hours. find his average speed during the first part of the trip if the entire trip was 235 miles. Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! 4x+3(x-20)=235
4x+3x-60=235
7x=295
x=42.14
x-20=22.14
This below is all you need to solve the problem
235/7=33.6 mph average
