A train sets off at 2 pm at the speed of 70 kmph another train starts at 3.30 pm in the same direction at the rate of 85 kmph. At what time the train will meet?

Suppose trains meet x hours after 2 pm

First train travels x hours.

Distance covered by first train = 70x

Distance covered by second train = 85(x – 1.5) 

15x = 127.5

X = 8.5 hrs

=  8 hrs   30 mins

$\therefore$ The trains meet 8 hours 30 mins after 2 pm. i.e,  at 10:30 pm