Two trains 140m and 160 m long run at
the speed of 60km/h and 40km/hr
respectively in opposite direction
parallel tracks. The time in seconds)
which they take to cross each other, is.
a. 9s
b. 9.6 s
c. 10 s
d. 10.8 s
Answers
Answered by
0
Answer:
10.8 sec
Step-by-step explanation:
Relative speed = (60 + 40) km/hr =[ 100 x ( 5 / 18 ) ]m/sec = ( 250 /9 ) m/sec. Distance covered in crossing each other = (140 + 160) m = 300 m. Required time = [ 300 x ( 9/250 ) ] sec = ( 54/ 5 )sec = 10.8 sec.
Answered by
0
Answer:
Relative speed = (60 + 40) km/hr =[ 100 x ( 5 / 18 ) ]m/sec = ( 250 /9 ) m/sec. Distance covered in crossing each other = (140 + 160) m = 300 m. Required time = [ 300 x ( 9/250 ) ] sec = ( 54/ 5 )sec = 10.8 sec.
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