A man walk from his home to town 6 kilometre away at 4 km per hour and returns again to his home at 12 km per hour using a tonga.what is the man's as a average speed for The Double journey?
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time 1=6/4=3/2=1.5
time 2=6/12=1/2=0.5
avg speed=total distance / total time
avg=6+6/1.5+0.5=12/2=6km/hr
time 2=6/12=1/2=0.5
avg speed=total distance / total time
avg=6+6/1.5+0.5=12/2=6km/hr
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