单选题:某商家决定将一批苹果的价格提高20%.这时所得的利润就是原来的两倍。已知这批苹果的进价是每千克6元,按原计划可获利润12

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题目内容:
某商家决定将一批苹果的价格提高20%.这时所得的利润就是原来的两倍。已知这批苹果的进价是每千克6元,按原计划可获利润1200元,那么这批苹果共有多少千克?(  ) A.600
B.800
C.1000
D.1200

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