Question 950088
Two planes leaving O'hare Airport in Chicago at the same time.One flies directly east at 540 mph. The other flies directly west at 720 mph. How long will i take them to be 1890 miles apart?
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Going in opposite directions the speeds are added.
540 + 720 = 1260 mi/hr
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d = r*t
t = d/r = 1890/1260
t = 1.5 hours