设原来乙筐有x个苹果2.4x-30-10=x+301.4x=70x=50个原来甲筐有：50X2.4=120个
设乙筐原有x个，甲筐原有2.4x个。2.4x-30=x+30+102.4x-x=30+30+101.4x=70x=502.4x=120
35x2=70(个)70％(2.4-1)50x2.4=120个
