Madhav covered the distance from P to Q at a speed of 60 km/hr and returned at a speed of 40 km/hr. Find the average speed for the entire journey. [Hint: Take the distance from P to Q as x]
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X+y /2=average speed
=60+40/2
=50
=60+40/2
=50
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60+40/2
50 km/hrs.......
50 km/hrs.......
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