Question

A train overtakes two persons who are walking in the same direction in which the train is going, at the rate of 2 kmph and 4 kmph and passes them completely in 9 seconds and 10 seconds respectively. the length of the train (in metres) is

Answer 1

Answer:

Step-by-step explanation:

Let the lenth of the train is- X

And the speed of the train is- Y

Then the velocity of the first man is

(Y-2)kmph

The second man is (Y-4)kmph

FIRST>

X/Y-2=9/3600 >Y-2=400X >Y+400X+2

SECOND>

X/Y-4=10/3600 >Y=360+4

400X+2=360X+4 >X=I/20KM

1/20*1000= 50 METERS