Question

If a man travels 65 km in 3 days by walking $7\frac{1}{2}$hours a day, in how many days will be travel 156 km by walking 8 hours day ?

Answer 1

Every day he walks 7.5 hrs

So in three days he walks 7.5×3 =22.5hrs

And he travelled 65km in these 22.5hrs

So the speed = distance/time

= 65/22.5 = 2.88km/hr

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