<PRE><B>Question 1081424</B>
One car travels 65 kilometers per hr and the other 85 kilo 
At the same time a canary starting on one car flies back and forth between the two cars 
If the canery flies 120 kilo per hr and spends no time to turn around at each car
How far has it flown when the car collide 
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The cars close at 65+85 = 150 km/hr
450/150 = 3 hours
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The canary flies 120 km/hr * 3 hours = 360 kms
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