內(nèi)蒙古鄂爾多斯康巴什新區(qū)2019屆中考數(shù)學(xué)一輪復(fù)習(xí) 專題六 實(shí)際應(yīng)用問(wèn)題課件.ppt

專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,1.（2017年四川綿陽(yáng)，21,11分）（本題滿分11分）江南農(nóng)場(chǎng)收割小麥，已知1臺(tái)大型收割機(jī)和3臺(tái)小型收割機(jī)1小時(shí)可以收割小麥1.4公頃，2臺(tái)大型收割機(jī)和5臺(tái)小型收割機(jī)1小時(shí)可以收割小麥2.5公頃（1）每臺(tái)大型收割機(jī)和小型收割機(jī)1小時(shí)收割小麥各多少公頃？（2）大型收割機(jī)每小時(shí)費(fèi)用為300元，小型收割機(jī)每小時(shí)費(fèi)用為200元兩種型號(hào)的收割機(jī)一共有10臺(tái)，要求2小時(shí)完成8公頃小麥的收割任務(wù)，且總費(fèi)用不超過(guò)5400元有幾種方案？請(qǐng)指出費(fèi)用最低的一種方案，并求出相應(yīng)的費(fèi)用,A型號(hào)臺(tái)燈售價(jià)x（元）與銷售數(shù)量y（臺(tái)）滿足關(guān)系式2x+y=140此商場(chǎng)決定兩種型號(hào)臺(tái)燈共進(jìn)貨100臺(tái)，即y=2x+140，則B型號(hào)臺(tái)燈共進(jìn)貨（100y）臺(tái)=（2x40）臺(tái)，設(shè)商場(chǎng)可獲得利潤(rùn)為w，則w=（x40）（2x+140）+（2010）（2x40）=2x2+240 x6000=2（x60）2+1200，20，A型號(hào)臺(tái)燈售價(jià)定為60元時(shí)，商場(chǎng)可獲得最大利潤(rùn)為1200元,172017泰安某水果商從批發(fā)市場(chǎng)用8000元購(gòu)進(jìn)了大櫻桃和小櫻桃各200千克，大櫻桃的進(jìn)價(jià)比小櫻桃的進(jìn)價(jià)每千克多20元大櫻桃售價(jià)為每千克40元，小櫻桃售價(jià)為每千克16元(1)大櫻桃和小櫻桃的進(jìn)價(jià)分別是每千克多少元？銷售完后，該水果商共賺了多少元錢(qián)？(2)該水果商第二次仍用8000元錢(qián)從批發(fā)市場(chǎng)購(gòu)進(jìn)了大櫻桃和小櫻桃各200千克，進(jìn)價(jià)不變，但在運(yùn)輸過(guò)程中小櫻桃損耗了20%.若小櫻桃的售價(jià)不變，要想讓第二次賺的錢(qián)不少于第一次所賺錢(qián)的90%，大櫻桃的售價(jià)最少應(yīng)為多少？,152017綏化甲、乙兩個(gè)工程隊(duì)計(jì)劃修建一條長(zhǎng)15千米的鄉(xiāng)村公路已知甲工程隊(duì)每天比乙工程隊(duì)多修路0.5千米，乙工程隊(duì)單獨(dú)完成修路任務(wù)所需天數(shù)是甲工程隊(duì)單獨(dú)完成修路任務(wù)所需天數(shù)的1.5倍(1)求甲、乙兩個(gè)工程隊(duì)每天各修路多少千米？(2)若甲工程隊(duì)每天的修路費(fèi)用為0.5萬(wàn)元，乙工程隊(duì)每天的修路費(fèi)用為0.4萬(wàn)元，要使兩個(gè)工程隊(duì)修路總費(fèi)用不超過(guò)5.2萬(wàn)元，甲工程隊(duì)至少修路多少天？,基礎(chǔ)溫故,考點(diǎn)聚焦,考向探究,效果檢測(cè),考向二分式方程的應(yīng)用,基礎(chǔ)溫故,考點(diǎn)聚焦,考向探究,效果檢測(cè),考向二分式方程的應(yīng)用,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,330,660,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,專題六實(shí)際應(yīng)用問(wèn)題,