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If a man travels 65km in 3 days by walking 7½ hours a day,in how many days will he travel 156km by walking 8 hours a day

Answer»

He walks per DAY =7.5 HRS
He walks in 3 DAYS= 7.5×3=22.5 hrs
And he travelled 65KM in these 22.5hrs
So the speed = DISTANCE / time
=65/22.5 =2.88 km/h
Speed of the man will remain same,
So time = distance/speed
= 156/2.88 = 54 hrs
Everyday he walks 8hrs, so for 54 hrs, he has to walk 54/8 = 6.75 days



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