SOLUTION: a man walks for some distance at 8 km/hr,and for an equal distance at 5 km/hr,the total time he takes is 3/4 hours.find the distance he had walked together?

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Question 739853: a man walks for some distance at 8 km/hr,and for an equal distance at 5 km/hr,the total time he takes is 3/4 hours.find the distance he had walked together?
Answer by Alan3354(69443) About Me  (Show Source):
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a man walks for some distance at 8 km/hr,and for an equal distance at 5 km/hr,the total time he takes is 3/4 hours.find the distance he had walked together?
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avg speed = 2*8*5/(8+5) = 80/13 km/hr
d = r*t = (80/13)*(3/4)
d = 60/13 km