The walking speed ratio of Party A and Party B is 13:11. If Party A and Party B set out from both places at the same time and walk in opposite directions, they will meet in 2.5 hours. If they walk in the same direction,

The walking speed ratio of Party A and Party B is 13:11. If Party A and Party B set out from both places at the same time and walk in opposite directions, they will meet in 2.5 hours. If they walk in the same direction,

If they are going in the same direction, when they meet:
(11 + 13) x2.5 ÷ (13-11) = 30 (hours)