SOLUTION: A car averaged 40mph for part of a trip and 50mph for the remainder. If the 5 hour trip covered 210 miles how long did the car average 40mph?

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Question 904842: A car averaged 40mph for part of a trip and 50mph for the remainder. If the 5 hour trip covered 210 miles how long did the car average 40mph?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
_______________rate_________time_________distance
part___________40____________x___________40x
part___________50____________y___________50y
totals______________________5____________210