4. A man walks at a speed of 6 km/hr for 1 km and 8 km/hr for the next 1 km. What is his average speed for the walk of 2 km?
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average speed = total distance/total time taken
= 1+1/14
=2/14
divide it and you will get your answer.
= 1+1/14
=2/14
divide it and you will get your answer.
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