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Edited: 08/09/2010 04:31 PM
Picture: John Rowland
John Rowland
Bee
Two trains are approaching each other on a straight track, each travelling at 15 miles per hour. They are initially 60 miles apart when a bee takes off from the front of one train at 40 miles per hour and flies to the second train. The bee then flies back and forth between the approaching trains until the trains meet.  How far does the bee travel?
Edited: 20/05/2013 05:02 PM
Picture: John Rowland
John Rowland

80 miles.

The trains meet after 2 hours (the time to travel 60 miles at a net speed of 30 miles per hour). In 2 hours the bee will fly 80 miles (the distance travelled in 2 hours at 40 miles per hour).