1、(72+72×1/3)÷(1-1/2-1/2×1/3)
=(72+24)÷(1-1/2-1/6)
=96÷(1-4/6)
=96÷1/3
=288千米
2、设A.B两地相距x千米
1/2x+72+1/3×(1/2x+72)=x
1/2x+72+1/6x+24=x
(1-1/2-1/6)x=96
(1-4/6)x=96
1/3x=96
x=96÷1/3
x=288
1、(72+72×1/3)÷(1-1/2-1/2×1/3)
=(72+24)÷(1-1/2-1/6)
=96÷(1-4/6)
=96÷1/3
=288千米
2、设A.B两地相距x千米
1/2x+72+1/3×(1/2x+72)=x
1/2x+72+1/6x+24=x
(1-1/2-1/6)x=96
(1-4/6)x=96
1/3x=96
x=96÷1/3
x=288