甲、乙两人各有若干块糖,若甲拿出他的1/5给乙,则两人的糖块数相等。原来甲乙两人的糖块数之比是多少 甲乙两人各有若干块糖若甲拿出它的1/5给乙则两人的糖块数相等...
\u7532\u4e59\u4e24\u4eba\u5404\u6709\u82e5\u5e72\u5757\u7cd6\uff1b\u82e5\u7532\u62ff\u51fa\u4ed6\u76841/5\u7ed9\u4e59\uff1b\u5219\u4e24\u4eba\u7684\u7cd6\u5757\u6570\u76f8\u7b49\uff1b\u539f\u6765\u7532\uff1b\u4e59\u4e24\u4eba\u7cd6\u5757\u6570\u7684\u6bd4\u662f\u591a\u5c11\uff1f\u89e3\uff1a\u7532\u4e59\u4e24\u4eba\u7cd6\u6570\u4e4b\u6bd4\u4e3a\uff1a
1\uff1a(1-1/5-1/5)
=1:3/5
=5:3
\u7532\u4e59\u4e24\u4eba\u5404\u6709\u82e5\u5e72\u5757\u7cd6\u82e5\u7532\u62ff\u51fa\u5b83\u76841/5\u7ed9\u4e59\u5219\u4e24\u4eba\u7684\u7cd6\u5757\u6570\u76f8\u7b49\uff0c\u539f\u6765\u7532\u4e59\u4e24\u4eba\u7684\u7cd6\u5757\u6570\u4e4b\u6bd4\u662f\u591a\u5c11
\u7532\u4e59\u4e24\u4eba\u5404\u6709\u82e5\u5e72\u5757\u7cd6\u82e5\u7532\u62ff\u51fa\u5b83\u76841/5\u7ed9\u4e59\u5219\u4e24\u4eba\u7684\u7cd6\u5757\u6570\u76f8\u7b49\uff0c\u539f\u6765\u7532\u4e59\u4e24\u4eba\u7684\u7cd6\u5757\u6570\u4e4b\u6bd4\u662f5\uff1a3
\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60
数量比是:1:(1-1/5-1/5)=1:(3/5)=5:3
设甲有x,乙有y,
(1-1/5)x=y+(1/5)x,
(3/5)x=y,
x:y=5:3,
甲乙之比是5:3
1:(1-2/5)=5:3
甲-甲/5=乙+甲/5
3甲/5=乙
甲:乙=5:3
绛旓細5锛3
绛旓細璁剧敳鏈堿鍧锛屼箼鏈A-30 A-30-20=3/4 *(A+20) -10 A=220 甯埌浣犺缁欏ソ璇勶紝璋㈣阿
绛旓細鐢层佷箼鍚勬湁浜绯栵紝鐢缁欎箼7鍧楀悗锛屼箼鏄敳鐨勪笁鍊嶅皯浜岋紝濡傛灉鐢叉湁20鍧楃硸锛鍒欎箼鏈30鍧楃硸銆
绛旓細鐢插拰涔鍚勬湁鑻ュ共鍧楃硸锛岀敳鐨勭硸鏁版瘮涔欏皯锛屾瘡娆℃搷浣滅敱绯栧鐨勪汉缁欑硸灏戠殑浜轰竴浜涚硸锛屼娇鍏剁硸鏁板鍔1鍊嶏紱缁忚繃2005娆¤繖鏍风殑鎿嶄綔浠ュ悗锛岀敳鏈10鍧楃硸锛屼箼鏈8鍧楃硸锛岃闂細涓や釜浜鍘熸潵鍒嗗埆鏈夊灏戝潡绯栵紵鍒嗘瀽锛氭湰棰樹腑涓や汉鐨勭硸鏁板拰涓18锛屾槸鍋舵暟锛岄偅涔堜袱浜烘瘡姝ユ墜涓殑绯栨暟鏈変袱绉嶆儏鍐碉細鍏ㄤ负鍋躲佸叏涓哄锛屾嵁姝ゅ垪琛ㄥ垎鏋...
绛旓細鐢插墿浣欒嚜宸辩殑2/3鏃,涓庝箼鐩哥瓑,涔姝ゆ椂涔熸槸鐢茬殑2/3,鍥犱负涔欐帴鍙椾簡鐢茬殑1/3,鍒欎箼鍘熸槸鐢茬殑1/3 鐢诧細涔 = 1锛歔(1-1/3) - 1/3)] = 3锛1
绛旓細绗竴娆℃搷浣滃悗锛岀敳14鍧楋紝涔4鍧楋紝鍗冲紑濮嬫椂鐢叉湁14\2=7鍧锛屼箼鏈7+4=11鍧 璋㈣阿锛佸悕瀛楋細鐙瓙鍦ㄦ垚闀 鍏勾绾
绛旓細鐢叉嬁鍑10鍧楃粰涔欏悗,涔鏄敳鐨5鍊,鐢插師鏉ユ湁澶氬皯绯栵紵宸茬煡锛氬紑濮嬫椂鐢=涔 5✕(鐢-10)=涔+10鈥斺斾緷棰樻剰璁剧珛绛夊紡銆5✕(鐢-10)=鐢+10鈥斺旀牴鎹凡鐭ワ細鐢=涔欒浆鎹㈡湭鐭ユ暟銆5鐢-50=鐢+10鈥斺斿寲绠銆4鐢=60鈥斺斿悎骞跺悓绫婚」銆傜敳=15鈥斺旀眰寰楁湭鐭ユ暟銆傛墍浠ワ細寮濮嬫椂鐢蹭箼鍚勬湁15鍧楃硸銆
绛旓細鍧楋級鐢叉湁5+6=11锛堝潡锛夛紱6鏄2鐨勫嶆暟锛岃11涓嶆槸2鐨勫嶆暟锛屾墍浠ョ浜屾鎿嶄綔浠嶆槸鐢茬粰涔欙紝绗簩娆℃搷浣滃墠锛屼箼鏈锛6梅2=3锛堝潡锛夛紝鐢叉湁锛11+3=14锛堝潡锛夛紱14鏄2鐨勫嶆暟锛屾墍浠ョ涓娆℃搷浣滄槸涔欑粰鐢诧紝閭d箞鍘熸潵鐢叉湁锛14梅2=7锛堝潡锛変箼鏈夛細3+7=10锛堝潡锛夌瓟锛氱敳鍘熸潵鏈7鍧楃硸锛屼箼鍘熸潵鏈10鍧楃硸锛
绛旓細璁剧敳銆佷箼浜屼汉鍘熸潵鍒嗗埆鏈绯栧潡x銆亂鍧楃硸锛屼箼浠庝笝澶勫彇鏉鍧楃硸锛庡垯鏍规嵁棰樻剰鐭ワ紝鐢层佷箼銆佷笝鍒嗗埆鏈夌硸鍧2x+z-32銆亂-x+z銆2脳锛32-z锛夛紟涔欏绯栫殑杞崲杩囩▼寰楃煡锛寉-x=z锛岀敱涓夊绯栧潡涓鏍峰鍙緱锛寊锛漼?x(1)3x?y锛32(2)2x+3z锛96(3)锛屾妸锛1锛変唬鍏ワ紙3锛夛紝寰3y-x=96 锛4锛夛紝鐢憋紙4锛壝3+...
绛旓細鏂规硶1锛屾棰樼殑鍏抽敭鏄"鐢茬粰涔5鍧楃硸鍚锛屼箼鏄敳鐨2鍊嶁濓紝閭d箞鍋囪鐢茬幇鍦ㄧ殑绯栨暟鏄1浠斤紝閭d箞涔欑殑绯栨暟鏄2浠斤紝鑰岀敳銆涔欎袱浜鍏辨湁绯栨灉27鍧楄繖涓绘暟涓嶅彉锛屾墍浠ユ瘡浠界硸鏋滄暟鏄27梅(1+2)=27梅3=9鍧楋紝涔熷嵆鐜板湪鐢叉湁绯栨灉9鍧楋紝閭d箞涔欑幇鍦ㄦ湁绯27涓9=18鍧椼傚洜鑰屽彲姹傚嚭鐢插師鏈夌硸鏋9+5=14鍧楋紝涔欏師鏉ユ湁绯栨灉...