1.

A train covers first 140 km in 2 hours, next 180 km in 3 hours and the last 40 km in 1 hour. Find the average speed of the train.

Answer»

A train covers first 140 km in 2 hours, next 180 km in 3 hours and the last 40 km in 1 hour. Find the average speed of the train.




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