Speed ratio: bus: truck = 1: 4/5 = 5: 4.
When the bus has completed the journey 1/3, the truck has completed the journey: (1/3)/5x4=4/ 15.
Distance between Party A and Party B: 24/(4/ 15)=90 (km).
2. Two cars, A and B, leave the two places relatively at the same time. A car traveled three-fifths of the whole journey in three hours, a car traveled 45 kilometers more than B car, and B car traveled 10 kilometers to reach the midpoint. What is the distance between the two places?
Distance between the two places: (45-10)/(3/5-1/2) = 350 (km).