Two trains, each travelling at a speed of are headed toward each other on the same track. At the exact moment, the trains are apart, a fly on the front of one train begins flying back and forth between the two trains at a speed of As soon as the fly reaches one train, it can instantaneously turn and fly back towards the other one.
What is the total distance the fly will have travelled before getting crushed between the trains?
Source: Brilliant
it takes one hour for trains to colide so the fly will have only one hour time 75kmh
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