The distance is 120 km. A and B start from a and B. the speed of car a is 80 km / h, and that of car B is 70 km / h. how many hours later will the two cars meet?

The distance is 120 km. A and B start from a and B. the speed of car a is 80 km / h, and that of car B is 70 km / h. how many hours later will the two cars meet?

Encounter time = 120 (80 + 70) = 0.8 hours

The distance between the two places is 810 km, and the two cars meet each other in 6 hours. The speed of car a is 80% of that of car B?

Suppose the speed of car B is x km / h and that of car a is 80% x km / h
6（X+80％X）=810
10.8X＝810
X＝75
80％X＝60
A and B cars travel 60 and 75 kilometers per hour
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1. Car a and car B travel from two places 325 kilometers apart at the same time. Car a travels 52 kilometers per hour, and car B's speed is 1.5 times that of car A. how many hours do the two cars meet after they leave

325÷﹙52＋52×1.5﹚＝2.5

The speed of car a is 100 km / h, and that of car B is 70 km / h. If the two cars are driving in the same direction, how long is the driving time when the two cars are 50 km apart?

Suppose that the driving time of two cars when they are 50 km apart is x hours. From the meaning of the question, we get 80 + 70x-100x = 50 or 100x = 70X + 80 + 50, and the solution is x = 1 or 133. Answer: two cars are driving in the same direction, and the driving time of two cars when they are 50 km apart is 1 hour or 133 hours