two cyclists and a fly
Two cyclists start of two cities 50 km distant from each other. to meet each other at a speed of 25 km / h. A fly comes from a bicycle to the other, flying at 42 km / h.
When meeting the other, back to the first, always at the same speed, so until the two cyclists are. How many miles you have traveled the fly in this swing? Solution
Cyclists are 50 km. the each other, and circulated to 25 km / h, are within an hour, is the same time that the fly is flying on a bicycle to another at a speed of 42 km / h, then travel 42 kilometers .
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