红糖比白糖多12千克,白糖比红糖少8分之1.红糖有多少千克?
红糖比白糖多12千克,白糖比红糖少8分之1.红糖有多少千克?
人气:160 ℃ 时间:2020-03-22 14:51:50
解答
X-12=(1-1/8)X
X-7/8X=12
1/8X=12
X=96
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