甲乙两人各有若干元，若甲拿出他所有钱的20%给乙，则两人所有的钱正好相等 甲乙二人各有若干元钱，若甲拿出他所有钱的20%给乙，则甲、乙...
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若甲拿出他所有钱的20%给乙，则两人所有的钱正好相等，则乙原来的钱和甲的1-20%X2=60%相等因此原来甲乙两人所有钱的最简整数比是1：60%=5：3
1-20%×2=60%
原来甲乙两人所有钱的最简整数比是：1:60%=5:3
绛旓細鐢-1/3鐢+(涔+1/3鐢)/5 =4/5(涔+1/3鐢)涔熷氨鏄 10/15鐢+1/5涔+1/15鐢=4/5涔+4/15鐢 涔熷氨鏄 7/15鐢=9/15涔 涔熷氨鏄 7鐢=9涔 鐢=9/7涔
绛旓細鍊掓帹杩樺師 鍚庢潵锛鐢蹭箼鍧囨湁150鍏 涔欑粰鐢插墠锛屼箼鏈150梅锛1-1/4锛=150梅0.75=200鍏冿紝鐢鏈150-200脳1/4=100鍏 涔欑敤鍘60鍏冨墠锛岀敳鏈100鍏冿紝涔欐湁200+60=260鍏 鐢茬粰涔欏墠锛岀敳鏈100梅锛1-1/3锛=100梅2/3=150锛堝厓锛夛紝涔欐湁260-150脳1/3=210鍏 绛旓細鍘熸潵鐢叉湁150鍏冿紝涔欐湁210鍏冦
绛旓細鐢锛涔=5锛3 鐢ㄤ唬鏁扮殑鏂规硶 璁綳涓虹敳銆佷箼涓篩 鏂圭▼寮忔槸锛氬洓鍒嗕箣涓X+Y=鍏垎涔嬩竴Y+锛圶-鍥涘垎涔嬩竴X锛夌瓟鏄5锛3
绛旓細鐢涓篨 涔涓篩 鍒楀紡涓 4/5X+1/3锛圷+1/5X锛=2/3锛圷+1/5X锛
绛旓細璁剧敳鏈夐挶X锛屼箼鏈夐挶Y 鏍规嵁棰樻剰鏈4/5X=Y+1/5X 鏈3/5X=Y X:Y=5:3
绛旓細鏈鍚庝咯浜洪兘鏈90鍏冿紝鍒欎粬淇╀竴鍏180鍏冿紝璁剧敳鍘熸湁x鍏冿紝涔180-x鍏 鎹鎰4/5x+1/4(1/5x+180-x)=90 3/4(1/5x+180-x)=90 瑙ｅ緱x=75 涔欎负105.
绛旓細鐢蹭箼涓や汉鍚勬湁鑻ュ共鍏,鐢叉嬁鍑1/5缁欎箼鍚,涔欐嬁鍑1/3缁欑敳,杩欐槸浠栦滑鐨勯挶鏁扮浉绛夛紝鍘熸潵鐢层佷箼涓や汉閽辨暟鐨勬瘮鏄紙15:33锛夈傝嫢璁剧敳鍘熸湁15鍏冿紝涔欏師鏈33鍏冿紝鐢叉嬁鍑1/5鍗3鍏冪粰涔欏悗,鐢蹭綑12鍏冦備箼寰楀埌3鍏冨悗锛屼箼鏈36鍏冿紝鍐嶆嬁鍑1/3鍗12鍏冪粰鐢插悗,姝ゆ椂锛岀敳鏈24鍏冿紝涔欎綑24鍏冿紝涓や汉鐨勯挶鏁扮浉绛夈
绛旓細瑙ｏ細鏍规嵁棰樻剰鐭ラ亾锛屼粬浠袱涓竴鍏辨湁180+180=360鍏冿紝鎵浠ヨ鐢叉湁X鍏冿紝閭ｄ箞涔欐湁Y鍏冿紝鍒欏垪鏂圭▼鏄細X-1/5X+锛360-X锛壝1/3=锛360-X锛壝2/3+1/5X锛岃В杩欎釜鏂圭▼寰楋細X=900/7锛岄偅涔堜箼鏈1620/7鍏
绛旓細180/(1-1/3)=270 鐢鍘熸湁锛180*2-270锛/锛1-1/5锛夛紳112.5鍏 涔鍘熸湁360-112.5锛247.5鍏
绛旓細璁句箼鍘熸湁X鍏 180X2=360(鍏)[锛360--X锛塜1/5+X]X1/3+(1--1/5)X锛360--X)=180 (72--1/5X+X)X1/3+288--4/5X=180 X=247.5 鐢诧細 360--247.5=112.5锛堝厓锛
