How to?

24.2 Two ice skaters, starting from rest, hold onto the ends of a 10 m pole. A 40-kg player is at one end of the pole and a 60-kg player is at the other end. The players then start pulling themselves along the pole towards each other while sliding without friction on the ice. If the two skaters continue past each other after they meet, what distance will the 60-kg player have moved with respect to the ice when the skaters have exchanged positions with respect to each other? (A) 8.0 m (B) 6.0 m 10 m (C) 4.0 m 60 kg 40 kg (D) 10.0 m (E 7.0 m