A. The highway between B is 680 km long. Two cars drive from both places at the same time. Car a travels 35 km per hour, and car B's speed is 1.3 times that of car A. after several hours, they meet each other

A. The highway between B is 680 km long. Two cars drive from both places at the same time. Car a travels 35 km per hour, and car B's speed is 1.3 times that of car A. after several hours, they meet each other

Set the time as y 35y + 1.3 * 35y = 680, y = 8.45

The speed ratio of car a and car B on the same section of the road is 3:2. It took four hours for car a and how many hours for car B to drive from place a to place B at the same time?

If the speed of car a is 3, the speed of car B is 2
Then the whole process = 4 * 3 = 12
Vehicle B time = 12 / 2 = 6 hours

A. The distance between B and B is 380 km. A and B vehicles leave each other at the same time and meet each other in four hours. It is known that the speed ratio of a vehicle and B vehicle is 11:8, and B vehicle is 1:1
How many kilometers less per hour than car a?

Two cars per hour 380 △ 4 = 95 km
B: less than 95 (11 + 8) x (11-8) = 95 / 19x3 = 15km per hour
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The two cars start from a and B at the same time and leave each other. They meet in four hours. The speed ratio of the two cars is 5 to 4. How many hours does it take for car a to reach place B

4÷5/（5+4）
=4÷5/9
=7.2 hours