Two trains are 200 km apart, and travelling towards each other at 50 km/hour each.

From one train a fly takes off, flying straight above the rails to the other train at the speed of 75 km/hour, bounces off it and flies back to the first train.

This is repeated till the trains crash together and the fly is smashed (Headline: Fly Dies in Freak Train Crash)

What distance is the fly able to fly until its meet its tragic end?

Note: there is a complicated and an easy way to solve this one.

• total dis. between trains= 200 km
  when cuming towards each other speed adds up and become= 50+50=100 km/hour
  so it will take =200/100= 2hour to cross the train.
  fly has 2 hour to fly. speed= 75 km/ hour
  it will travel= 75*2= 150 km.
• 12 years agoHelpfull: Yes(1) No(0)