Question

2 trains starts from 2 station 390km apart at 10 am and 11am at 65km/hr and 35km/hr respectively .Find when these two trains meet

Answer 1

Answer:

Let the distance where they meet be x.

Dist covered by 1st train during the meet would be 'x' and by the 2nd train would be '390-x'.

Let the time taken by 1st train be 'x'.

The time taken by 2nd train will be 'y+1'.

According to the question,

x=65×y (1st train) {distance=speed×time}

& 390-x=(y+1)×35

x=65y equation 1

390-x=35y+35 equation 2

From equation 1 and 2

390=100y+35

5×74=5(20y+7)

74=20y+7

67=20y

6.7=2y

3.35=y

Since,

y=3.35

10am+ 3.35 hours=13.35pm.

=The trains will meet at 1:35 pm.