( Use Common Sense rather than Mathematics )

Winnipeg'='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='='Toronto>

A Train leaves Toronto for Winnipeg (1000 miles)
and travels at a speed of 60 miles an hour.

At the same time another train leaves Winnipeg
for Toronto and travels at a speed of 40 miles an hour.,

A fly that sat on the train in Toronto flies at a speed
of 8o miles an hour. When the fly reaches the train
from Winnipeg it turns around and flies back to meet
the train from Toronto. Again it will turn around and
fly to meet the train from Winnipeg and so on.

For a simple solution

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