1.

A man walks from his home to a town 6 km away at 4 km per hour and returns again to his homeat 12 km per hour using a tonga. What is the man's average speed for the double journey? b KA car can travel the ist

Answer»

D=6kms1=4kmphs2=12kmpht1=6/4=1.5st2=6/12=0.5saverage speed=6×2/1.5+0.5=12/2=6kmph

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