At the same time, the bus and freight car leave from ab which is 120 kilometers away. The speed of the bus is three fourths of that of the train. How many kilometers did the bus and freight car walk when they met? Write arithmetic and think

At the same time, the bus and freight car leave from ab which is 120 kilometers away. The speed of the bus is three fourths of that of the train. How many kilometers did the bus and freight car walk when they met? Write arithmetic and think

If the speed of a passenger car is 3 / 4 of that of a freight car, the speed ratio of the two cars is 3:4,
At the same time, the distance ratio of the two vehicles is 3:4
Bus line: 120 * (3 / 7) = 360 / 7 (km)
Truck line: 120 * (4 / 7) = 480 / 7 (km)

A passenger car and a freight car leave from a and B at the same time. It is known that the passenger car travels 120 kilometers per hour, and the speed ratio of the passenger car to the freight car is 3:2
How many kilometers are there between a and B when they meet 1.5 hours after leaving?

Passenger cars travel 120 kilometers per hour, and the speed ratio of passenger cars to freight cars is 3:2
120 / 3 * 2 = 80 km / h
(120 + 80) * 1.5 = 300km
A: A and B are 300 kilometers apart

The speed ratio of the bus to the bus is 5:7, and the distance between the bus and the bus is several thousand meters
The passenger car and the freight car drive in the opposite direction from the midpoint of a and B at the same time. Five hours later, the passenger car arrives at a, and the freight car is 60 kilometers away from B. It is known that the speed ratio of the freight car to the passenger car is 5: how many kilometers are there between a and B?

Passenger cars and freight cars start from the midpoint of a and B at the same time and drive in the opposite direction
The speed of passenger car is 7x and that of freight car is 5x
7x * 5 = 5x * 5 + 60
x = 6
So bus speed 42, 5 hours running 42 * 5 = 210 is half, so the total distance is 420 km

The van runs in the opposite direction from the middle of a and B at the same time. Three hours later, the passengers arrive at a place, and the truck is 42 kilometers away from B place. The speed ratio of goods and passengers is 5 to 7
The whole journey?
What's the formula

42÷（1 -5/7）×2
=42÷2/7×2
=147×2
=294 (km)