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Multiple choice general knowledge math & puzzles

Two trains are 150 miles apart approaching each other at 60 mph and 90 mph respectively. A fly sitting on one train starts flying from it reaches the second train and immediately turns back and flies back to the first train,and turns around again. It goes on flying back and forth until the two trains collide. If the speed of the fly is 130 miles per hour, how much distance did it flied?

  1. 150 miles

  2. 125 miles

  3. 120 miles

  4. 130 miles
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