已知，a:b=2:3，b:c=3:4 已知，a:b=5:9，b:c=4:9 已知，a:b=2分之1:3分之1，b:c=0.3:0.2 要计算过程，快
\u5de7\u7b97\uff1a\u5df2\u77e5A\u4e583\u5206\u4e4b2=B\u4e5810\u5206\u4e4b9=C\u96644\u5206\u4e4b3=D\u4e585\u5206\u4e4b4=E\u96645\u5206\u4e4b1\uff0c\u628aA\u3001B\u3001C\u3001DD>A>B>C>E
\u89e3\uff1a\u539f\u5f0f=\uff08-1\uff09-\uff08-2\u5206\u4e4b3\uff09
=-1+2\u5206\u4e4b3
=2\u5206\u4e4b1
1.a:b=2:3，b:c=3:4
则a:b:c=2：3：4
2.a:b=5:9， b:c=4:9
b=9/5*a 9/5*a:c=4:9
a:c=20:81
则a:b:c=20：36：81
3.a:b=2分之1:3分之1，b:c=0.3:0.2
则a:b=3:2 b:c=3:2
a:b=9:6 b:c=6:4 (相当于分子分母同时乘以一个数字，从而找到a和c的比例关系)
a:b:c=9:6:4
1.已知，a:b=2:3，b:c=3:4
∴a:b:c=2:3:4:
2.已知，a:b=5:9，b:c=4:9
a:b=5:9=20:36，
b:c=4:9=36:81
∴a:b:c=20:36:81:
3.已知，a:b=2分之1:3分之1，b:c=0.3:0.2
a:b=(1/2):(1/3)=3:2=9:6，
b:c=0.3:0.2=3:2=6:4
∴a:b:c=9:6:4
绛旓細a锛歜=2锛3锛宐锛歝=4锛5 璁゜鍦ㄤ袱涓紡瀛愪腑鐨勪唤鏁扮浉鍚屼篃灏辨槸姹備笁鍜屽洓鐨勬渶灏忓叕鍊嶆暟銆俛锛歜=8锛12,b锛歝=12锛15 a锛歜锛歝=8锛12锛15
绛旓細a:b=2:3=4:6 b:c=2:1=6:3 鎵浠:b:c=4:6:3 鍥犱负ab鐨勯潰绉拰绛変簬cd鐨勯潰绉拰锛岃嫢鍚勫垎涓10鍒嗭紝鍗砤:b=4:6 鍒檆:d=3:7 d鐨勯潰绉负35锛屽垯c=15锛宑+d=50锛屾墍浠ユ鏂瑰舰闈㈢Н涓100 鍙橀暱涓10
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绛旓細浣犲亣璁続涓2x锛岄偅涔圔涓3x锛孋涓3/2x锛涙墍浠A:B:C=4:6:3;C+D=A+B;鎵浠=A+B-C=7/2x=35锛涙墍浠=10锛涢偅涔圓=20锛孊=30锛孋=15 姝ｆ柟褰㈢殑闈㈢Н灏辨槸A+B+C+D=100.鎵浠ヨ竟闀夸负10锛涢噰绾冲搱锛岋紝瑕佹槸鍐嶆湁涓嶄細鐨勪簡灏卞幓鍜屽叾浠栫闉嬪晢閲忎笅鍢涳紝锛岃繖鍎 253016094灏卞緢澶氬悓瀛︾殑鍛 ...
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绛旓細涓や釜姣斾緥寮忛兘鏈夐」b锛宎锛歜=3:2锛屾墍浠=(3/2)b锛宐锛歝=4:5锛屾墍浠=(5/4)b锛宎:b:c=(3/2)b:b:(5/4)b=3/2:1:5/4=6:4:5
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绛旓細鍥炵瓟锛氬凡鐭涓夎褰㈢殑鍐呰鍜=180搴 瑙a=2瑙b锛瑙c=3瑙抌 渚濇嵁锛氳a+瑙抌+瑙抍=180搴 寰楋細2瑙抌+瑙抌+3瑙b=180搴 6瑙抌=180搴 瑙抌=30搴 瑙抋=60搴 瑙抍=90搴 杩欐槸涓涓洿瑙掍笁瑙掑舰銆
