SOLUTION: A plane travels due east at 325 miles per hour and another plane travels due west at 275 miles per hour. If they leave at the same time, in how many hours will they be 2100 miles a

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A plane travels due east at 325 miles per hour and another plane travels due west at 275 miles per hour. If they leave at the same time, in how many hours will they be 2100 miles a      Log On


   

Question 607698: A plane travels due east at 325 miles per hour and another plane travels due west at 275 miles per hour. If they leave at the same time, in how many hours will they be 2100 miles apart?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Plane 1

d = rt

d = 325t

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Plane 2

d = rt

d = 275t

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Total distance = 325t + 275t = 600t

So 600t = 2100

600t = 2100

t = 2100/600

t = 3.5


So they will be 2100 miles apart in 3.5 hours
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