A and B leave from both places at the same time. Car a travels 45 kilometers per hour and car B 40 kilometers per hour. When the two cars meet, they are 20 kilometers away from the destination How many kilometers are there between the two places?

The distance between a and B is (45x + 40x) km. 40x + 20 = 45x-205x = 40x = 8h. The distance between a and B is 40 * 8 + 45 * 8 = 680km. The speed ratio of a and B is 40:45 = 8:9. The distance between a and B is 8:9

There are two teams of a and B, team a has two teams of a and B, team a has 30 cars and team B has 12 cars. After the deployment of the two teams of vehicles, the number of cars in team a is 75%
There are two teams, team a has 30 cars and team B has 12 cars. After the deployment of the two teams, 75% of the number of cars in team a is just 1.5 times of that in team B. how is the deployment of cars?

If the number of vehicles of team a is X after deployment, then the number of vehicles of team B is 42 -- X
So there's an equation
0.75x = (42-x) times 1.5
0.75X=63--1.5X
2.25X=63
9X/4=63
X=28
After the deployment, the number of vehicles a was 28, 2 less than before
So the deployment plan is to deploy 2 cars from team a to team B.

There are two teams, team a has 30 cars and team B has 12 cars. After the deployment of the two teams, 75% of the number of cars in team a is exactly 1.5 of the number of cars in team B. how is the deployment of cars?

X+Y=42
0.75X=1.5Y
y=14 X=28
A: Party A calls two cars to the fleet

There are two teams, team a has 28 cars and team B has 11 cars. After the deployment of the two teams' cars, there are three thirds of the number of cars in team B
····3 / 2 of team B is just 75% of team a's number of cars. How are cars allocated?

The two teams have a total of 39 vehicles: 28 + 11
After deployment, the ratio of a and B vehicles is 3 / 2:75% = 2:1
After deployment, team a has 26 cars: 39 ÷ (2 + 1) × 2
Team a: 28-26 = 2
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A and B leave from both places at the same time. Car a travels 45 kilometers per hour and car B 40 kilometers per hour. When the two cars meet, they are 20 kilometers away from the destination How many kilometers are there between the two places?