初中一年级数学题请看下方具体内容? 75%C3%B7%E3%百分之8094138%C3%B7%EF%BC%88100-54%EF%BC%89%E3%百分之809585%C3%97%2895%EF%BC%8D14百分之40C3%B724%29%0A80400%EF%BC%8D%284300%EF%BC%8B8百分之70C3%B715%292百分之40C3%9778%C3%...
初中
75%C3%B7%E3%百分之8094138%C3%B7%EF%BC%88100-54%EF%BC%89%E3%百分之809585%C3%97%2895%EF%BC%8D14百分之40C3%B724%29%0A80400%EF%BC%8D%284300%EF%BC%8B8百分之70C3%B715%292百分之40C3%9778%C3%B7%EF%BC%88154-115%EF%BC%89%0A1437%C3%9727%EF%BC%8B27%C3%97563%E3%百分之809475-%EF%BC%8812%2B18%EF%BC%89%E3%百分之8095%C3%B715%0A21百分之60C3%B7%E3%百分之8094%EF%BC%8883-79%EF%BC%89%C3%9718%E3%百分之80952百分之80EF%BC%8B8百分之40C3%B724%C3%975%0A325%C3%B713%C3%97%28266%EF%BC%8D2百分之502985%C3%97%2895%EF%BC%8D14百分之40C3%B724%29%0A588百分之70C3%B7%28105%EF%BC%8B百分之20C3%972%291437%C3%9727%EF%BC%8B27%C3%97563%0A81432%C3%B7%2813%C3%9752%EF%BC%8B78%29%5B37.85-%EF%BC%887.85%2B6.4%EF%BC%89%5D%C3%97百分之300A156%C3%97%5B%2817.7-7.2%29%C3%B73%5D%EF%BC%88947%EF%BC%8D599%EF%BC%89%EF%BC%8B76%C3%9764%0A36%C3%97%28913%EF%BC%8D276%C3%B723%29%5B192%EF%BC%8D%EF%BC%8854%EF%BC%8B38%EF%BC%89%5D%C3%9767%0A%5B%EF%BC%887.1-5.6%EF%BC%89%C3%970.9-1.15%5D%C3%B72.581432%C3%B7%2813%C3%9752%EF%BC%8B78%29%0A5.4%C3%B7%5B2.6%C3%97%EF%BC%883.7-2.9%EF%BC%89%2B0.62%5D%EF%BC%88947%EF%BC%8D599%EF%BC%89%EF%BC%8B76%C3%9764百分之60EF%BC%8D%289.5%EF%BC%8B28.9%29%5D%C3%B70.182.881%C3%B70.43%EF%BC%8D0.24%C3%973.5百分之20C3%97%5B%282.44%EF%BC%8D1.8%29%C3%B70.4%EF%BC%8B0.15%5D28-%283.41.25%C3%972.4%290.8%C3%97%E3%百分之809415.5-%283.215.79%29%E3%百分之8095%EF%BC%8831.83.2%C3%974%EF%BC%89%C3%B75194%EF%BC%8D64.8%C3%B71.8%C3%970.936.72%C3%B74.25%C3%979.93.416%C3%B7%EF%BC%880.016%C3%9735%EF%BC%890.8%C3%97%5B%28百分之10EF%BC%8D6.76%29%C3%B71.2%5D%0A%EF%BC%88136%2B64%EF%BC%89%C3%97%EF%BC%8865-345%C3%B723%EF%BC%89%286.8-6.8%C3%970.55%29%C3%B78.5%0A0.12%C3%974.8%C3%B70.12%C3%974.8%EF%BC%8858%2B37%EF%BC%89%C3%B7%EF%BC%8864-9%C3%975%EF%BC%89%0A812-700%C3%B7%EF%BC%889%2B31%C3%9711%EF%BC%89%EF%BC%883.2%C3%971.5%2B2.5%EF%BC%89%C3%B71.6%0A85%2B14%C3%97%EF%BC%8814%2B208%C3%B726%EF%BC%89120-36%C3%974%C3%B718%2B35%0A%EF%BC%88284%2B16%EF%BC%89%C3%97%EF%BC%88512-8208%C3%B718%EF%BC%899.72%C3%971.6-18.305%C3%B77%0A%0A4%2F7%C3%B7%5B1%2F3%C3%97%EF%BC%883%2F5-3%2F百分之10EF%BC%89%5D%EF%BC%884%2F5%2B1%2F4%EF%BC%89%C3%B77%2F3%2B7%2F百分之100A12.78%EF%BC%8D0%C3%B7%EF%BC%8813.4%EF%BC%8B156.6%EF%BC%8937.812-700%C3%B7%EF%BC%889%2B31%C3%9711%EF%BC%89%EF%BC%88136%2B64%EF%BC%89%C3%97%EF%BC%8865-345%C3%B723%EF%BC%893.2%C3%97%EF%BC%881.5%2B2.5%EF%BC%89%C3%B71.6%0A85%2B14%C3%97%EF%BC%8814%2B208%C3%B726%EF%BC%89%EF%BC%8858%2B37%EF%BC%89%C3%B7%EF%BC%8864-9%C3%975%EF%BC%89%0A%286.8-6.8%C3%970.55%29%C3%B78.5%EF%BC%88284%2B16%EF%BC%89%C3%97%EF%BC%88512-8208%C3%B718%EF%BC%89%0A0.12%C3%974.8%C3%B70.12%C3%974.8%EF%BC%883.2%C3%971.5%2B2.5%EF%BC%89%C3%B71.6%0A120-36%C3%974%C3%B718%2B3510.15-10.75%C3%970.4-5.7%0A5.8%C3%97%EF%BC%883.87-0.13%EF%BC%89%2B4.2%C3%973.74347%2B45%C3%972-41百分之60C3%B752%0A32.52-%EF%BC%886%2B9.728%C3%B73.2%EF%BC%89%C3%972.587%EF%BC%8858%2B37%EF%BC%89%C3%B7%EF%BC%8864-9%C3%975%EF%BC%89%0A%5B%EF%BC%887.1-5.6%EF%BC%89%C3%970.9-1.15%5D%C3%B72.5%EF%BC%883.2%C3%971.5%2B2.5%EF%BC%89%C3%B71.6%0A5.4%C3%B7%5B2.6%C3%97%EF%BC%883.7-2.9%EF%BC%89%2B0.62%5D12%C3%976%C3%B7%EF%BC%8812-7.2%EF%BC%89-6%0A3.2%C3%976%2B%EF%BC%881.5%2B2.5%EF%BC%89%C3%B71.6%EF%BC%883.2%C3%971.5%2B2.5%EF%BC%89%C3%B71.6%0A5.8%C3%97%EF%BC%883.87-0.13%EF%BC%89%2B4.2%C3%973.74%0A33.02%EF%BC%8D%EF%BC%88148.4%EF%BC%8D90.85%EF%BC%89%C3%B72.5
例如
1.某班考生去18千米的北山郊游。唯有一辆汽车,需分两组,甲组先乘车,乙组步行。车行至A处,甲组下车步行,车返回接乙组,最后两组同时到达北山。已知汽车速度是60km/h,步行速度是4km/h.求A点距北山的距离。
设甲的速度为x,乙的速度为y
80x+80y=400
80y-80x=400
故此,x=0 y=5(该题目时间为80秒与实质上不符)
3、设A点距北山的距离为x,车返回到乙组时,乙距出发点距离为y
既然如此那,[x-4*(18-x-y)/60]/4=(18-y)/60
y/4=(18-x)/60+(18-x-y)/60
故此,x=2 y=2
A点距离北山为2km
3. 牡丹杯足球赛11轮(即每个队全部都需要比赛11场),胜一场得3分,平一场得一分,负一场得0分.国兴三高俱乐部队所胜场数是所负场数的4倍,结果共得25分,本次杯赛该球队胜\负\平各几场?
设胜x场,负y场,则平11-x-y场
x=4y
3x+11-x-y=25
x=8
y=2
胜8场,负2场,平1场
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