A passenger car and a freight car leave from the two places at the same time. After 18 hours, the two cars meet at a certain place. It is known that the distance between the two places is 1488 kilometers. The freight car travels 8 kilometers less than the passenger car every hour. The freight car stops for 1 hour every 3 hours. How many kilometers does the passenger car travel per hour?

A passenger car and a freight car leave from the two places at the same time. After 18 hours, the two cars meet at a certain place. It is known that the distance between the two places is 1488 kilometers. The freight car travels 8 kilometers less than the passenger car every hour. The freight car stops for 1 hour every 3 hours. How many kilometers does the passenger car travel per hour?

Solution (1) because 18 hours = (3 hours + 1 hour) × 4 + 2 hours, the actual travel time of freight car is: 3 × 4 + 2 = 14 hours. (2) if the passenger car travels x kilometers per hour, then the freight car travels (X-8) kilometers per hour. The equation is: 18x + 14 × (X-8) = 1488, 32x-112 = 148832x = 1600x = 50; answer: the passenger car travels 50 kilometers per hour

A car travels 42km in the first two hours and 38km in the last three hours. How many kilometers per hour does this car travel on average

(42 × 2 + 38 × 3) △ 5 = 39.6 (km / h)
A: the average speed of this car is 39.6km per hour

The distance between AB and a is 425km, and a and B cars travel from the two places at the same time. A car travels 42km per hour, B car travels 43km per hour. At 2:00, the two cars will meet again for several hours

425 in addition to (42 + 43) = 5, another 3 hours

The distance between the two stations is 486 km. The two buses start from the two stations at the same time and run in opposite directions. They meet on the way in 4.5 hours
It is known that the speed of the first bus is 1.5 times that of the second bus. How many kilometers per hour do the two buses travel

Solving the second bus speed x km / h
4.5（x+1.5x）=486
2.5x=108
x=43.2
Second vehicle speed: 43.2 × 1.5 = 64.8km
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