<PRE><B>Question 353820</B>
Plane A 280 mph
Plane B = 320 mph
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difference between their speeds = 320-280 = 40 mph
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plane A is 6 minutes ahead .
So in 6 minutes it travels 280* 1/10 = 28 miles..
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Plane B catches up 40 mph per hour
28 miles it will catch up in 28/40 = 7/10 hours
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plane B speed = 320mph
time to catch up = 7/10 hours
distance = speed * time = 320*7/10
=224 miles
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m.ananth@hotmail.ca</PRE>