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On the map with a scale of 1:80 km, the distance between Party A and Party B is 8.4 cm. How many hours does it take for a car to travel from place a to place B at a speed of 64 km per hour If you want to say something, you must use the equation
The distance on the map is in direct proportion to the actual distance
8.4：64X＝1：80
X＝10.5
At the same time, the bus and the truck drive in the opposite direction from the midpoint of a and B. five hours later, the bus arrives at a, and the truck is 35 kilometers away from B. It is known that
The speed of a bus is 6 / 7 of that of a truck. How many kilometers is the distance between a and B
If the speed of the bus is 6 / 7 of that of the truck, then the truck has arrived and the bus has not arrived, so the problem is wrong. If the speed of the truck is 6 / 7 of that of the bus, the solution is as follows: let the speed of the bus be x km / h, then the speed of the truck be 6 / 7X km / h, and the equation is: 5x = 6 / 7X + 35
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