(1) The bus and truck leave from A at the same time, and the directions are opposite. Buses travel 40 kilometers per hour and trucks travel 32 kilometers per hour. How many kilometers are the two cars apart after 4 hours? (Draw a schematic diagram before answering)

(40+32) × 4 = 288km

(2) Passenger cars and trucks leave from the opposite directions of Party A and Party B at the same time. Passenger cars travel 40 kilometers per hour, while trucks travel 32 kilometers per hour. Four hours after departure, the distance between the two cars is still12km. How many kilometers is the distance between Party A and Party B?

(40+32)×4+ 12=300 (km)

(3) The distance between Party A and Party B is 300 kilometers, and buses and trucks start from both parties at the same time. Buses travel 40 kilometers per hour and trucks travel 32 kilometers per hour. After 4 hours, how many kilometers are the two cars apart?

300-(40+30) × 4 =12km

2. Ask for a meeting time.

(1) The distance between Party A and Party B is 300 kilometers, and the bus and truck leave both places at the same time. Buses travel 40 kilometers per hour and trucks travel 32 kilometers per hour. After a few hours, the distance between the two cars is still 12 km?

(300- 12) ÷ (40+32) = 4 (hours)

(2) The distance between Party A and Party B is 300 kilometers. The bus first goes from A to B, 12 km later, and the truck goes from B to A. How many hours after the truck leaves, does it meet the bus?

(300- 12) ÷ (40+32) = 4 (hours)