Question

A train can cross two men going along
the railway track at 4 km/hr and 5 km/hr in same direction in 10 sec and 12 sec Find the
length of train.​

Answer 1

Step-by-step explanation:

Let the length of the train be x metres and speed  be y

m/s

Speed of the first person

=

2kmph

                                         

=

2×

18

5

                                           

=

9

5

m/s

Speed of the second train

=

4kmph

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Answer 2

Answer:

50 mt

Step-by-step explanation:

let the length of the train be x mt and speed y m/s

speed of the first person=2kmph

2×5\18

5/9m/s

speed of the second train=4kmph

4×5/18

10/9 m/s

x/5=9

y-5/9

9y-5=x