A and B run in the opposite direction from a certain point along a circular track. It is known that a's speed is 80% of B's. after 10 minutes of meeting, they continue to run forward. How many minutes will it take for a to run back to the starting point?

A and B run in the opposite direction from a certain point along a circular track. It is known that a's speed is 80% of B's. after 10 minutes of meeting, they continue to run forward. How many minutes will it take for a to run back to the starting point?

According to the stem analysis, we can get: A's speed: B's speed = 80:100 = 4:5, then the ratio of a and B's driving distance is 4:5 when they meet. Suppose a's driving distance is 4a, and the driving distance is 5a, then a's speed is: 4A △ 10 = 0.4A, so 5A △ 0.4A = 12.5 (minutes). A: it takes 12.5 minutes for a to run back to the starting point

A, B two people running training, a run distance than B 1 / 5, B time than a 1 / 8, a two people's speed ratio is

The ratio of speed is 27 to 20

A and B run in the opposite direction from a certain point along a circular track. It is known that a's speed is 80% of B's. after 10 minutes of meeting, they continue to run forward. How many minutes will it take for a to run back to the starting point?

According to the stem analysis, we can get: A's speed: B's speed = 80:100 = 4:5, then the ratio of a and B's driving distance is 4:5 when they meet. Suppose a's driving distance is 4a, and the driving distance is 5a, then a's speed is: 4A △ 10 = 0.4A, so 5A △ 0.4A = 12.5 (minutes). A: it takes 12.5 minutes for a to run back to the starting point