求做数学题

来源:百度知道 编辑:UC知道 时间:2024/07/05 02:16:33
1.一百馒头一百僧,大僧三个更无争,小僧三人分一个,大僧小僧各几何?

2.小名去文具店购买铅笔,店主说:“如果多买一些,可以给你八折。”小明测算了一下,如果买50支,比按原价购买便宜6元,那么每支铅笔的原价是多少元?
要用一元一次方程答

1.一百馒头一百僧,大僧三个更无争,小僧三人分一个,大僧小僧各几何?
设有大和尚x个,则小和尚有100-x个。
3x+(100-x)/3=100,
9x+(100-x)=300,
8x=200,x=25,100-x=75,
大和尚25个,小和尚75个.

2.小名去文具店购买铅笔,店主说:“如果多买一些,可以给你八折。”小明测算了一下,如果买50支,比按原价购买便宜6元,那么每支铅笔的原价是多少元?
设每支铅笔的原价是x元,
50(1-0.8)x=6,
10x=6,x=0.6.
每支铅笔的原价是0.6元.

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1.设大僧有x人,小僧100-x人
所以得3x+(100-x)/3=100(3x+三分之100-x=100)
所以x=25,100-x=75
2.设每支铅笔的原价是x元
所以50x-6=40x
所以 x=0.6

我只有答案:
1.大25小75