数学题:五星村计划由10名工人16天修一条道路

  • 时间:2020-06-07 17:40:52
  • 分类:数学世界
  • 阅读:99 次

数学题:五星村计划由10名工人16天修一条道路,开工4天后,增加了10人。要是每人每天的工作效率不变,原定的铺设任务可以提前多少天完成?(由“陆欣婷”提问,需要解题算式)

数学题解答:把一个人一天做的事情,算做一个工作量。那么可以就下面的过程来解答:

总工作量:10×16=160(个)

开工四天完成工作量:4×10=40(个)

还剩下的任务工作量:160-40=120(个)

还需要的天数:120÷(10+10)=6(天)

可提前的天数:16-4-6=6(天)

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