Question

A train 100 metres long takes 6 seconds to cross a man walking at 5 kmph in the direction opposite to that of the train. Find the speed of the train.?

Answer 1

So the man is going \(\frac{25}{18}\, m/s\). In 6 seconds, he moves exactly \[6\cdot\frac{25}{18}=\frac{25}{3} \,m\]Hence, the train goes \[100-\frac{25}{3}=\frac{275}{3}\,m\] in 6 seconds.

Answer 2

That means the speed of the train should be\[\frac{275}{18}\,\,m/s\]

Answer 3

yes in kmph it is 55

Answer 4

55 kmph

Answer 5

right sir ?

Answer 6

Let me check.

Answer 7

k sir

Answer 8

Yup. It converts to 55 kph.

Answer 9

so 55 is the correct answer right sir ?

Answer 10

I believe so.

Answer 11

thanks sir

Answer 12

You're welcome.