两袋大米共重230千克,甲袋大米用去百分之三十,乙袋大米用去60千克后,两袋大米的重量相
两袋大米共重230千克,甲袋大米用去百分之三十,乙袋大米用去60千克后,两袋大米的重量相
数学人气:787 ℃时间:2019-10-23 01:32:45
优质解答
甲袋大米用去百分之三十后看作是1,则原来甲袋大米为10/7;乙袋大米用去60千克,由于两袋大米的重量相等,所以现在乙袋大米也可以看作为1.只考虑乙袋大米用去的60千克后,剩下230-60=170千克170/(10/7+1)=170/(17/7)...
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