SOLUTION: Two balloonists leave the same location simultaneously traveling in opposite directions: one traveling west at 28 mph and the other traveling east at 42 mph. How long will it take

Question 821631: Two balloonists leave the same location simultaneously traveling in opposite directions: one traveling west at 28 mph and the other traveling east at 42 mph. How long will it take them to be 385 miles apart?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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relative speed = 28 + 42 = 70 mph
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s = d / t
t = d / s
t = 385 / 70
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answer:
t = 5.5 hours
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