After 16 hours of meeting, car a continues to drive for 20 hours to arrive at place B. after meeting, car B passes by How many hours to arrive at a

After 16 hours of meeting, car a continues to drive for 20 hours to arrive at place B. after meeting, car B passes by How many hours to arrive at a

The answer is 12.8 hours
The implicit condition of the question is that B has driven 16 hours, and a needs 20 hours to complete. It can be concluded that a's speed is 0.8 times that of B. in other words, B's speed is 1.25 times that of A
Therefore, when a travels for 16 hours, B takes 0.8 times as long as a, that is, 16 * 0.8 = 12.8 hours

Party A and Party B start from ab at the same time. After 5 hours, the two cars meet and continue to move at the same speed. After another 3 hours, car a arrives at place B. car B is 120 kilometers away from place A. how many kilometers are there between the two places

120/(5-3) *5=300

A and B leave from a and B at the same time and meet in 6 hours. It takes 9 hours for a to go to B, and how many hours for B to go from a to B?

Vehicle B x hours, (1 / 9 + 1 / x) * 6 = 1
1/X=1/6-1/9=1/18
X = 18 hours