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Q.
A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train ?
A.
230 m
B.
240 m
C.
260 m
D.
320 m
View Answer
Correct choice: A
Explanation:
Relative speed = (120 + 80) km/hr =(200*5/18)m/s = (500/9)m/s Let the length of the other train be x metres. Then, x+270/9 = 500/9 => x + 270 = 500 => x = 230.
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