某水果点的苹果每千克比桔子贵0.5元,小明和伙伴买了3kg苹果,4kg橘子,共花了19元,

1个回答

  • (19-3×0.5)÷(3+4)

    =17.5÷7

    =2.5(元)

    2.5+0.5=3(元)

    答:苹果3元每千克,橘子2.5元每千克.