Question

Two persons are at a distance of 32 km. If they start walking at the same time in the same
direction, they meet in 8 hours: if they walk in the opposite directions, they meet in 4 hours.
Find their respective speeds.
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Answer 1

Answer:

Your answer is 33km/h

Step-by-step explanation:

Let the speed of the train be x km/hr. & its length =y km.

Now A train covers its own length when it crosses a person.

So the distance covered by the train in each case =y km.

In the first case, the relative speed of the first person and the train=(x−3)km/hr. and

in the second case, the relative speed of the second person and the train=(x−6)km/hr.  

So, in the first case, the time taken=  

x−3

y  hrs. and  in the second case, the time taken=  

x−6

y  hrs.  

∴ By the given condition,

in the first case,  

x−3

y =9

Or y=9x−27....(i)  

and

in the second case,  

x−6

y  =9

Or  y=10x−60...(ii).

Comparing (i) & (ii),

9x−27=10x−60

Or  x=33km/hr.

So the speed of the train = 33km/hr.

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