arithmetic - the distance between two cities p and q is 390 km a train starts from p at 1030 am and travels towards q at 50 kmhr another train starts from q at 1130 am and travels towards p at 60 kmhr at what time do they meet - skillgun

Solution: Suppose they meet x hours after 10.30 A.M. then,
(Distance covered by first train in x hrs)+(Distance covered by second train in (x-1) hrs) = 390.
.'. 50x + 60(x - 1) = 390
=> 110x = 330
=> x = 3.
so, they meet at (10.30 + 3) i.e., 1.30 P.M.