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What is the average speed if a man travels 12 the distance at speed of 40 kmph, 13 the distance at 50 kmph and rest of the distance at 60 kmph? |
| Answer» What is the average speed if a man travels 12 the distance at speed of 40 kmph, 13 the distance at 50 kmph and rest of the distance at 60 kmph? | |