Party A and Party B practice running on the 400-meter circular track. Party A runs 240 meters per minute and Party B runs 200 meters per minute. Both of them set out at the same time, place and direction, so they met for the first time after (10) minutes. If Party A turns and runs after the meeting, it will meet again after (5/6) minutes.

Let's meet in x minutes.

X*(240-200)=400

X= 10

Let's meet in y minutes.

Y*(240+200)=400

Y=5/6