SOLUTION: An airline leaves Phoenix traveling at an average rate of 420 mph. Thirty minutes later, a second airliner leaves phoenix traveling along a parallel route. If the second plane over

Question 373857: An airline leaves Phoenix traveling at an average rate of 420 mph. Thirty minutes later, a second airliner leaves phoenix traveling along a parallel route. If the second plane overtakes the first at a point 1680 miles from phoenix, find its rate. The difference in times is 30 min.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Both planes have traveled the same distance when they meet
which is 1680 mi
given:
1st plane:

(1)
2nd plane:

(2)
From (1):

(2)

The 2nd plane's rate is 480 mi/hr
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