Question

two trains start the same time from two stations to 240 kilometres apart and going in the opposite direction and cross Each Other 150 kilometre apart from the first Asian what is the ratio of their speeds

Answer 1

let velocity of 1st train be u

,,. ,,. ,,. 2nd train be v

relative velocity is u-(-v)=u+v.

let the time interval for both trains be 't'.

then,

(u+v)t=240.

ut=150.

ut+vt=240.

vt=240-150=90.

ut/vt=u/v=150/90=5/3.