A train 150 m long passes a km board in 30 seconds and another train of the same length travels in t...........

Quantitative Aptitude (CDS) Problems on trains

A train 150 m long passes a km board in 30 seconds and another train of the same length travels in the opposite direction in 16 seconds. The speed of the second train is

99kmph

50kmph

45kmph

99/2 kmph

छोटे Courses बड़े Results

Master Problems on trains

Prepare through Micro-courses

Try Now

Explanation:

Speed of the first train = (150/30 )m/sec = 5 m/sec

Let the speed of the second train be x m/sec

Relative speed = (5+x ) m/sec
300/(5+x) = 16
300 = 80 + 16x
x = 220/16 = 55/4m/sec
So speed of second train = (55/4)x(18/5)kmph = 99/2kmph