arithmetic - two stations a and b are 220 km apart on a straight line one train starts from a at 9 am and travels towards b at 40 kmph another train starts from b at 8 am and travels towards a at a speed of 25 kmph at what time will they meet - skillgun

Suppose they meet x hours after 9 a.m.
Distance covered by A in x hours = 40x km.
Distance covered by B in (x - 1) hours = 25(x - 1) km.
Therefore 40x + 25(x - 1) = 220
=> 65x = 195
=> x = 3.
So, they meet at 12 p.m.