A problem by Vinay Manjunath

Level pending

A bus passenger counts the electric poles on the road as he passes them .The electric poles are at a distance of 50 meters.What will be his count in 5 hours if the speed of the bus is 40 km/hr.


The answer is 4000.

Vinay Manjunath by Vinay Manjunath , 22, India

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3 solutions

J C Sarkar
Feb 4, 2014

Speed 40km/hr and traveled for 5 hours Hence 40 5 1000/50=4000

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Michael Diao
Jan 17, 2014

We realize that the speed is in kilometers per hour and the distance between poles is 50 meters. Since the problem does not state the distance to the nearest pole, we assume that it is 50 50 meters. Thus, we multiply 40 km/hr by 5 hours to get a distance traveled of 200 , 000 200,000 meters. Dividing by 5 m , 5 m, we get an answer of 4000 . \boxed{4000}.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

Use v=s/t,

s=vt=40(5)=200km

no.of electrical poles=200km/0.05km=4000...

1 Helpful 0 Interesting 0 Brilliant 0 Confused

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