Two trains start at the same time from two stations and proceed towards each other at speeds of 90 km/h and 70 km/h, respectively. When they meet, it is found that one train has travelled 140 km more than the other, What is the distance (in km) between the two stations?

1120

Ratio of Speed is  9 : 7

We know , Speed is directly proportional to Distance

Ratio of Distance = 9 : 7

According to question ,

( 9 - 7 )R = 140 km

2R = 140 km

1R = 70 km

So , Total Distance = ( 9 + 7 )R = 11R

= 16 × 70

= 1120 km