SOLUTION: 2 planes leave Newyork AT 10am, one heading for Europe at 600mph and one heading in the opposite direction at 150mph. At what time will they be 900 miles apart?

Question 75591: 2 planes leave Newyork AT 10am, one heading for Europe at 600mph and one heading in the opposite direction at 150mph. At what time will they be 900 miles apart?
Answer by psbhowmick(878) (Show Source): You can put this solution on YOUR website!
Let the planes be 900 miles apart after 't' hours from start.

or

In 't' hrs. the first plane travels = miles.
In 't' hrs. the second plane travels = miles.
After 't' hours the distance between the two planes flying in opposite directions = (600t + 150t) = 750t mph.
When, this distance is 900 miles,

So the reqd. time vis t = 1.2 hrs. = 1.2*60 min = 72 min = 1 hr 12 min.
Thus the planes will be 900 miles apart at 11:12 am.
RELATED QUESTIONS
Two planes leave New York at 10 a.m., one heading for Europe at 900 km/h and one heading... (answered by checkley77)

Two planes leave Chicago at the same time heading in opposite directions. The plane... (answered by ptaylor)

Two planes leave an airport, one goes north at 500mph, the other south at 600mph. How... (answered by ewatrrr)

Thank you for your help! If two planes leave an airport at 1:00pm, how far in distance... (answered by srinivas123)

two trains leave a station at the same time, heading in opposite directions. One train... (answered by vleith,gonzo)

Two trains leave a station at the same time, heading in opposite directions. One train is (answered by lynnlo)

If two planes leave the same airport at 1:00 pm, how many miles apart will they be at... (answered by halbren)

If two planes leave the same airport at 1:00pm, how many miles apart will they be at... (answered by checkley77)

If two planes leave the same airport at 1:00 pm, how many miles apart will they be at... (answered by checkley77)