CAT Exam

A train B speeding with 120 kmph crosses another train C running in the same direction, in 2 minutes. If the lengths of the trains B and C be l00m and 200m respectively, what is the speed (In kmph) of the train C?

Read Solution (Total 2)

111 Kmph

Distance travelled by B =(sum of length of trains + distance travelled by C in 2 min)
120 kmph --> 2000 metre per min
Let speed of C be x metre per minute

=> 2000*2 = 100 + 200 + 2x
=> x = 1850 metre per minute
=> x = 111 kmph
12 years agoHelpfull: Yes(4) No(15)

distance travelled/total speed=diffof time
(100+200/1000)/(120-x)=2/60 =>18=240-2x =>x=111
9 years agoHelpfull: Yes(2) No(0)

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