A SHIP IS ABOUT TO SINK DUE TO AN ICEBERG WHEN THREE RESCUE VESSELS COME. EACH VESSEL WAS CARRYING 50 PASSENGERS WHEN THE RESCUER NOTICED THAT IS NOT SAFE FOR ALL THE PASSENGERS SINCE THE VESSELS WERE NOT OF THE SAME SIZE. AS KNOWN BY THE RESCUER, THE PASSENGERS ON BOARD IN EACH VESSEL SHOULD BE IN THE RATIO 2:3:5. HOW MANY PASSENGERS SHOULD BE TRANSFERRED FROM VESSEL A TO VESSEL B TO VESSEL C FOR THE SAFETY OF ALL PASSENGERS?