SOLUTION: Pablo is driving 40 miles per hour. After he has driven 30 miles, his brother Ricardo starts driving in the same direction. At what rate must Ricardo drive to catch up with Pablo i

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Question 110570This question is from textbook
: Pablo is driving 40 miles per hour. After he has driven 30 miles, his brother Ricardo starts driving in the same direction. At what rate must Ricardo drive to catch up with Pablo in 5 hours? This question is from textbook

Answer by wgunther(43) About Me  (Show Source):
You can put this solution on YOUR website!
So, we're assuming Pablo and Ricardo are starting in the same place I hope. In 30 minutes, Pablo has gone 20 miles, right? And I'm also assuming he continues going rather than stopping. So Pablo will cover an addition 40*5=200 miles in 5 hours. So Ricardo has to do 220 miles in 5 hours. so 220=5r. So r=220/5=44. So he has to drive 44 miles per hour.