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