SOLUTION: A train B speeding with 1290 km/ h crosses another train C running in the same direction, in 2 minutes,if the length of the train B And C be 100 m and 200 m respectively,what is th

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Question 872641: A train B speeding with 1290 km/ h crosses another train C running in the same direction, in 2 minutes,if the length of the train B And C be 100 m and 200 m respectively,what is the speed (in km/h) of the train C?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Never heard of a train speed of 1290 km/h. Love to go. If your problem says 1290 then add a zero and recalculate
speed difference =129-x
distance to cross 300m = 0.3 km
d/r = t
.3/129-x= 2/60
60*.3=2(129-x)
18 =258-2x
2x= 240
x=120 km/h