Question

36.
एक रेलगाड़ी बुधवार को 5 बजे संध्या में एक शहर से रवाना हुई और दूसरे शहर
में शुक्रवार की संध्या 5 बजे पहुँची। यदि दोनों शहरों के बीच की दूरी 1920
कि०मी. है। तो गाड़ी की औसत चाल बताएँ।​

Answer 1

Answer:

Assuming their velocities to be uniform throughout

the journey, the Delhi train takes 6 hours and the

Jaipur to Delhi train takes 5 hours reaching.

The distance between two stations be x kms.

The one heading Jaipur nears Jaipur =

6

2x

kms, from

when one heading Delhi starts.

The two trains have to cover the relative distance

of {x.(x/3)}=(2x/3).

The relative velocity over the journey =

6

x

+

5

x

=

30

5x+6x

=11x/30

covering the relative distance of (2x/3) time taken

will be ⇒(

3

2x

)(

30

11x

)

=20/11 hours

= 1 hr 49 minutes.

∴ The two trains will meet at 1 hr 49 minutes p.m

So, the answer is "1 hour 49 minutes p.m