SOLUTION: a car passes a given point at 30 mph and travels to the next point one mile away what speed does it need to do for the next mile to make an average speed over the entire journey of
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Question 246140: a car passes a given point at 30 mph and travels to the next point one mile away what speed does it need to do for the next mile to make an average speed over the entire journey of 60 mph
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
(30+x)/2=60
30+x=120
x=90 mph
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