The train travels 58 kilometers per hour, and the car 62 kilometers per hour. At the same time, they depart from each other to know when the distance between a and B is 672 kilometers
Let's meet in X hours
58X+62X=672
X=5.6
Unit hour
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A passenger car and a freight car run in the opposite direction from the same place at the same time. After 4 hours, the distance is 400 kilometers. It is known that the passenger car runs 58 kilometers per hour, and how many kilometers does the freight car run per hour?
400 △ 4-58 = 100-58, = 42 (km). A: the freight car travels 42 km per hour
A train can travel 58 and 1 / 2 kilometers in 3 / 4 hours
How many kilometers is the distance between the two places?
The speed of the train is (58-1 / 2) / (3 / 4) = 78 (km / h)
Then calculate the distance from a to B: 78 * (3-1 / 3) = 260 (km)
A: the distance between the two places is 260 km
From a to B, it takes 8 hours for a bus to complete the whole journey, and 10 hours for a truck. Now the bus starts for 2 hours, and then the truck starts. How many hours after the truck starts, the two cars meet?
Let's suppose that the two trucks meet after X hours of departure. From the meaning of the question, we get 18 × (x + 2) + 110x = 118X + 14 + 110x = 1940x = 34, x = 103. Answer: the two trucks meet after 103 hours of departure