Two trains start from Delhi and Poona towards each other at 7 a.m. with speeds of 85 km/h and 67km/h, respectively. If they cross each other at 3.30 p.m., the distance between the stations is

1292 km

Relative speed = 85 + 67 = 152 km/h

Total time taken from 7:00 am to 3:30 pm = 8.5 hours

Total distance = Speed  × Time

= 152 × 8.5

= 1292 km