When a bus goes from place a to place B, three hours later, the ratio of the distance it has traveled to the distance it has not traveled is 2 / 5. After another 60 kilometers, the distance it has traveled is the same as that of the main road fast When a bus goes from place a to place B, three hours later, the ratio of the distance it has traveled to the distance it has not traveled is 2 / 5. After another 60 kilometers, the ratio of the distance it has traveled to the total distance is 5 / 7. How many kilometers are there between a and B?

When a bus goes from place a to place B, three hours later, the ratio of the distance it has traveled to the distance it has not traveled is 2 / 5. After another 60 kilometers, the distance it has traveled is the same as that of the main road fast When a bus goes from place a to place B, three hours later, the ratio of the distance it has traveled to the distance it has not traveled is 2 / 5. After another 60 kilometers, the ratio of the distance it has traveled to the total distance is 5 / 7. How many kilometers are there between a and B?

The distance is x km
2/(2+5)X+60=5/7X
X=140

A car from a to B, the first hour of the whole line 1 / 5, the second hour than the first hour more than 15 kilometers, 135 kilometers away from B, road

1/5X+1/5X+15+135=X
X = 250 (km)

A car drives from the east to the West. After a journey, it is 210 kilometers away from the west, and then 20% of the whole journey. At this time, the ratio of the distance traveled to the distance not traveled is 3:2. How many kilometers are there between the East and the west?

Suppose the distance between the East and the west is x km, we can get: & nbsp; x-210 + 20% x = 35x, x-210 + 0.2x = 0.6x, & nbsp; 1.2x-210 = 0.6x, & nbsp; 1.2x-0.6x = 210, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 0.6x = 210, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 3

When a car drives from a to B for a certain distance, it is 210 kilometers away from B and 20% of the whole journey. At this time, the ratio of what has been done to what has not been done is 3:2. How many kilometers are there between a and B?

Let the whole distance be 5x km, 210-2x = X. the solution is x = 70, so the distance between a and B is 350 km