arithmetic - two trains start from a and b respectively and travel towards each other at a speed of 60 kmhr and 75 kmhr respectively by the time they meet the second train has traveled 70 km more than the first the distance between a and b is - skillgun

Solution: At the time of meeting, let the distance traveled by the first train be x km.
Then, distance covered by the second train is (x + 70) km.
.'. x/60 = (x + 70)/75 => 75x = 60x + 60*70
=> 15x = 4200 = x = 280 km.
so, distance between A and B = (x + x + 70)
= 280 + 280 + 70
= 630 km.