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
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
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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