A man walks 6 km at 12 km/h and retums at 10 km. Find his average speed
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Average Speed is 10.9km/hrs.
Step-by-step explanation:
Case-1
when the man stars walking,
distance=6km
speed=12km/hrs
time taken= distance/speed
t = 6/12 = 0.5hrs
Case-2
when he starts returning,
distance=6km
speed=10km/hrs
time taken= 6/10 = 0.6hrs
total distance = 6km + 6km = 12km
total time taken= 0.5+0.6 = 1.1hrs
Average speed = total distance/total time
= 12/1.1
=10.9km/hrs
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