甲、乙两工程队和挖一条639米长的水渠,甲队先挖3天,甲、乙两队再合挖13天完成.乙队每天挖的米数是甲队的1.5倍.甲队、乙队各挖了多少米?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 17:06:48
![甲、乙两工程队和挖一条639米长的水渠,甲队先挖3天,甲、乙两队再合挖13天完成.乙队每天挖的米数是甲队的1.5倍.甲队、乙队各挖了多少米?](/uploads/image/z/4000393-1-3.jpg?t=%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E5%B7%A5%E7%A8%8B%E9%98%9F%E5%92%8C%E6%8C%96%E4%B8%80%E6%9D%A1639%E7%B1%B3%E9%95%BF%E7%9A%84%E6%B0%B4%E6%B8%A0%2C%E7%94%B2%E9%98%9F%E5%85%88%E6%8C%963%E5%A4%A9%2C%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E9%98%9F%E5%86%8D%E5%90%88%E6%8C%9613%E5%A4%A9%E5%AE%8C%E6%88%90.%E4%B9%99%E9%98%9F%E6%AF%8F%E5%A4%A9%E6%8C%96%E7%9A%84%E7%B1%B3%E6%95%B0%E6%98%AF%E7%94%B2%E9%98%9F%E7%9A%841.5%E5%80%8D.%E7%94%B2%E9%98%9F%E3%80%81%E4%B9%99%E9%98%9F%E5%90%84%E6%8C%96%E4%BA%86%E5%A4%9A%E5%B0%91%E7%B1%B3%3F)
甲、乙两工程队和挖一条639米长的水渠,甲队先挖3天,甲、乙两队再合挖13天完成.乙队每天挖的米数是甲队的1.5倍.甲队、乙队各挖了多少米?
甲、乙两工程队和挖一条639米长的水渠,甲队先挖3天,甲、乙两队再合挖13天完成.
乙队每天挖的米数是甲队的1.5倍.甲队、乙队各挖了多少米?
甲、乙两工程队和挖一条639米长的水渠,甲队先挖3天,甲、乙两队再合挖13天完成.乙队每天挖的米数是甲队的1.5倍.甲队、乙队各挖了多少米?
甲每天为X,乙每天1.5X,
3*X+13*(x+1.5x)=639
3x+13*2.5x=639
3x+32.5x=639
35.5x=639
x=18
甲每天18米,乙每天18*1.5=27米
乙一共27*13=351米,甲18*(13+3)=288米