Math, asked by rohanparmar676, 10 months ago

A train of length 150 metres, takes 10 seconds to cross another train 100 metres long
coming from the opposite direction. If the speed of the first train be 30 km/hr, then find
the speed of the second train.
(a) 60 m/s (b) 5 m/s
(c)72 km/hr
(d) 60 km/hr​

Answers

Answered by sandy779
3

Step-by-step explanation:

Take the speed of the second train = x km/hr

They will have to cover a distance = sum of the lengths of the trains ( 150 + 100 = 250 m = 0.25 km )

Obtain their relative speed( x + 30 ) km/h & find out the time taken ( 10 sec = 10/3600 hr )

Equate it to 10s and solve for

( x + 30 ) =( 0.25/ 10 ) * 3600

x = 60 km/hr

Answered by spadikazamfam
0

Answer:

A. 45 km/hr

B. 54 km/hr

C. 72 km/hr

D. 60 km/hr

Answer: Option D

Step-by-step explanation:

A train of length 150 m takes 10 seconds to pass over another train 100 m. long coming from opposite direction. If the speed of the first train is 30 km/hr.

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