SOLUTION: You are planning a trip that will require you to travel 780 miles. You figure that you will average 65 miles per hour driving and 260 miles per hour flying. You also figure that yo

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Question 898881: You are planning a trip that will require you to travel 780 miles. You figure that you will average 65 miles per hour driving and 260 miles per hour flying. You also figure that you will drive twice as many hours as you fly. How long will you drive?
Drive 12hrs, Fly 3hrs...
65x6=390...780-390=390...??????
65x8=520...780-520=260...??????

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Assume you fly x hours. You then drive 2x hours.
RatexTime=Distance so,
D=R%2At
D%5Bfly%5D%2BD%5Bdrive%5D=780
2x%2A65%2Bx%2A260=780
130x%2B260x=780
390x=780
x=2
So you will fly 2 hours and drive 4 hours.