the super fly
two trains facing each others on the same trail, the distance between them is 200 km, they are both running on a constant speed of 100 Km\h, a fly sitting on the first train glass when the train start to move it goes to the other train glass and go back( flies back and forth between the two trains) with a speed of 150 Km\h. the question is how much is the distance covered by the fly when the two train meet up.
The answer is 150.
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1 solution
The distance between the trains is 200 km. Both trains are moving towards each other with 100 km/h. relative speed = 200 km/h. Time for the trains to reach each other =200/200=1 hr. The distance fly will travel in 1 hr =150 km.
SO 150 k.m.