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数学
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100千克稻谷可以加工出大米82千克,要加工82吨大米需要稻谷多少吨?
是小数的解决问题,快,急
人气:276 ℃ 时间:2019-08-19 12:10:47
解答
设需要稻谷x吨.
依题意和已知,有:
100:82=x:82
解得:x=100(吨)
答:需要稻谷100吨.
或者:
因为100千克稻谷可以出82千克大米,所以大米的产出率是:82/100=0.82
82÷0.82=100(吨)
答:需要稻谷100吨.
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