It takes two hours for a small car to go from land a to land B, and four hours for a large car to go from land B to land a. the two cars face each other from 8:30 at the same time

It takes two hours for a small car to go from land a to land B, and four hours for a large car to go from land B to land a. the two cars face each other from 8:30 at the same time

1 △ 1 / 2 + 1 / 4) = 1 △ 3 / 4 = 4 / 3 hours = 80 minutes. The two cars meet after 80 minutes, i.e. 1 hour 20 minutes. 8:30 + 1 hour 20 minutes = 9:50. Therefore, the two cars meet at 9:50