设梨树有x棵,则苹果树有(4/3)x棵,桃树有(2/3)x棵由题意得x+(4/3)x+(2/3)x=288解得x=96则(4/3)x=128,(2/3)x=64所以梨树有96棵,苹果树有128棵,桃树有64棵