A swimmer with a mass of 58kg and a velocity of 1.6 m/s to the north climbs onto a 142 kg raft. The combined velocity of the swimmer and raft is 0.32 m/s to the north. What is the rafts velocity before the swimmer reaches it? Please show work and use conservation of momentum equation

A swimmer with a mass of 58 kg and a velocity of 1.6 m/s to the north climbs onto a 142 kg raft. The combined velocity of the swimmer and raft is 0.32 m/s to the north. What is the raft's velocity before the swim mer reaches it? 2. 8 X 102 mis to the south