100元钱买100斤果其中桃子3元钱1斤:李子4元1斤,琵琶1元14斤问多样果多少斤? 购物小常识
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100元钱买100斤堡,其中桃子三元一斤,李子四元一斤,枇杷亿元14斤,哎呀,发现自己年纪大了,连小学的题都不会了,太惭愧了
首先100元钱能买100斤的果子,而其中我们知道桃子三元一斤,李子4元一斤,而琵琶是医援14斤,这样的果子我们就可以进行分析。
绛旓細100鍏冮挶涔100鏂ゆ灉瀛愶紝鍏朵腑妗冨瓙涓夊厓涓鏂わ紝鏉庡瓙鍥涘厓涓鏂わ紝鏋囨澐涓鍏冧竴鏂わ紝14鏂ら棶澶氭牱鏋滄槸澶氬皯鏂わ紵澶氭牱鏋滃姞鏉ヤ竴鍏辨槸12鏂
绛旓細5鍏冧竴鏂よ嫻鏋:60鍏---12鏂 3鍏冧竴鏂ゆⅷ: 12鍏---4鏂 涓鍏3鏂ゆ瀛:28鍏---84鏂
绛旓細璁捐嫻鏋滄槸m鏂わ紝妗冨瓙n鏂わ紝m锛宯閮芥槸鏁存暟锛岀敱棰樻剰寰楋紝3.3m+2.5n=100锛屼袱杈瑰悓涔10寰楋紝33m+25n=1000锛岀Щ椤瑰寲绠寰楋紝33m=1000-25n=25锛40-n锛夊張m锛宯閮芥槸鏁存暟锛屾墍浠=25锛宯=7 浜诧紝鏈涜兘甯埌浣犲摝. :-锛
绛旓細涓涓瀛=涓変釜妗冩牳锛屽皬鏄庤兘鍚冨埌100妗冨瓙锛屾垨300涓牳妗冦傘愪笉鏄緢绠鍗曞悧銆
绛旓細3鍏冪殑妗冨瓙18涓紝4鍏冪殑鏉庡瓙10涓紝鑻规灉72涓
绛旓細鍏堝仛鍋囪锛屽亣璁100鍏鍏ㄦ槸妗冨瓙锛岄偅灏辨湁400涓紝姊ㄦ崲妗冨瓙锛1涓崲12涓 鑻规灉鎹㈡瀛愶紝1涓崲60 鑻规灉鏈璐碉紝鍏堜粠鑻规灉鐨勪负1寮濮嬭瘯锛岄偅灏辩浉褰400-60锛屽墿涓340-100锛屽啀鐢240鍘绘崲妗冨瓙锛岃兘鎹20锛屽湪鎹竴娆12 60+21*12+(100-1-21)=390锛屾崲鑻规灉锛屾崲姊紝閮戒笉鏄暣鏁帮紝鎺掗櫎锛佸湪璇曡嫻鏋滀负2,鍓╀笅280-98锛屾崲...
绛旓細闇瑕佷拱72涓﹦姒 10涓妗冨瓙 18涓潕瀛 鍏100涓按鏋 100鍏冮挶
绛旓細棰樹富鏄惁鎯宠闂"涓涓妗冨瓙1鍏冮挶锛2涓鏍告崲涓涓瀛愰棶锛100鍏冮挶鏈澶氳兘鍚冨灏戞牳妗"锛200涓備竴涓瀛愪竴鍏冿紝涓鐧鍏冭兘鎹竴鐧句釜妗冨瓙銆備袱涓牳妗冩崲涓涓瀛愶紝鏁呬竴鐧惧厓鑳芥崲涓ょ櫨涓牳妗冦
绛旓細寰愭枃闀垮湪琛椾笂鐪嬭灏忓簵鍗栭矞妗冿紝涓婂墠闂环閽便傚簵涓昏浠栬。瀹逛笉鏁达紝鍐峰喎鍦拌锛氣滆繖妗冧笉涓婄Г锛100鏂囬挶涓涓紝浣犱拱寰楄捣鍚楋紵鈥濆緪鏂囬暱鎯筹紝杩欏簵涓诲仛鐢熸剰澶笉璁茶鐭╀簡锛屽緱鏁欒鏁欒浠栵紝浜庢槸鎷垮嚭100鏂閽变拱浜嗕釜妗冨瓙銆傚簵涓诲ソ涓嶅緱鎰忥紝蹇冩兂锛岃繕鐪熸湁杩欐牱鍌荤殑绗ㄨ泲銆傚緪鏂囬暱涔拌繃妗冨悗锛屽氨鍦ㄥ簵闂ㄥ彛璧拌繃鏉ワ紝璧拌繃鍘汇傚綋鏈...
绛旓細20鏂よ嫻鏋滐紝60鏂ゆ瀛愶紝20鏂ゆ瀛 杩欑棰樼洰鐢ㄩ殣鏋氫妇娉曟渶濂藉仛锛堝湪涓瀹氱殑閫昏緫宸ヤ綔鍚庢湁閫夋嫨鐨勬灇涓撅級锛屽儚杩欓噷鐨勮寖鍥村彲浠ヨ偗瀹10鏂23鏂ょ殑锛屾渶澶氬彧瑕佽绠13娆 濡傛灉涓瀹氳鍏紡涔嬬被鐨勭畻锛屽厛鎶妟鐪嬩綔甯告暟 x+y=100-z 0.5x+0.8y=100-2.1z 0.6y=((200-4.2z)-100+z)=100-3.2z 鐒跺悗 z=(100-0.6y...