Question 1051050: Two planes just took off from Milwaukee, WI. The first plane is traveling
2 times as fast as the second plane. After traveling in the same direction for
9 hours, they are
990 miles apart. What is the average speed of each plane? (Hint: Since they are traveling in the same direction, the distance between them will be the difference of their distances.)
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Two planes just took off from Milwaukee, WI.
The first plane is traveling 2 times as fast as the second plane. After traveling in the same direction for 9 hours, they are 990 miles apart. What is the average speed of each plane?
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990/9 = 110 mi/hr difference in speed.
--> r1 = r2 + 110
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r1 = 2*r2 (stated)
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2r2 = r2 + 110
r2 = 110 mi/hr
r1 = 220 mi/hr
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Planes that slow don't have 9 hours of fuel, and I doubt they refuel in the air.
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