<PRE><B>Question 957485</B>
Plane A is traveling 312 miles per hour and is 450 miles ahead of plane B. Plane B is traveling at 385 miles per hour. How long will it take plane B to catch up to plane A?
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Plane B DATA:
rate = 385 mph ; distance = x+450  miles ; time = d/r = (x+450)/385
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Plane A DATA:
rate = 312 mph ; distance = x miles ; time = d/r = x/312 hrs
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Equation::
time = time
(x+450)/385 = x/312
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312x +312*450 = 385x 
73x = 312*450
x = 1923.29
Ans: B time = (1923.29+450)/385 = 6.16 hrs = 6hr 9 min 36 seconds
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Cheers,
Stan H. 
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