学校书法兴趣小组的人数比美术兴趣小组少四分之一,后来书法组有6人改上美术组, 学校美术兴趣小组的人数是书法兴趣小组的2.4倍,书法兴趣小组...
\u5b66\u6821\u4e66\u6cd5\u5174\u8da3\u5c0f\u7ec4\u7684\u4eba\u6570\u6bd4\u7f8e\u672f\u5174\u8da3\u5c0f\u7ec4\u5c11\u56db\u5206\u4e4b\u4e00\uff0c\u540e\u6765\u4e66\u6cd5\u7ec4\u67096\u4eba\u6539\u4e0a\u7f8e\u672f\u7ec4\uff0c\u8bbe\u539f\u6765\u7f8e\u672f\u7684\u6709x\u4eba\uff0c\u539f\u6765\u4e66\u6cd5\u7684\u6709\uff08x-1/4x\uff09\u4eba
\u5219\uff1a\uff08x-1/4x\uff09-6=1/3\uff08x+6\uff09
\u89e3\u5f97\uff1ax=16
\u5219\uff1a\u7f8e\u672f\u7ec416\u4eba\uff0c\u4e66\u6cd5\u7ec412\u4eba\uff0c\u4e24\u4e2a\u5c0f\u7ec4\u4e00\u517128\u4eba\u3002
\u7b54\u3002\u3002\u3002\u3002\u3002\u3002
\u8bbe\u4e66\u6cd5\u5174\u8da3\u5c0f\u7ec4\u7684\u4eba\u6570\u4e3ax\u4eba\uff0c\u5219\u7f8e\u672f\u5c0f\u7ec4\u7684\u4eba\u6570\u4e3a2.4x\uff0c2.4x-x=28 1.4x=28\uff0c x=20\uff0c2.4\u00d720=48\uff08\u4eba\uff09\uff0c\u9a8c\u7b97\uff1a2.4\u00d720-20=48-20\uff0c=28\uff0c\u7b54\uff1a\u4e66\u6cd5\u5c0f\u7ec4\u7684\u4eba\u6570\u670920\u4eba\uff0c\u7f8e\u672f\u5c0f\u7ec4\u7684\u4eba\u6570\u670948\u4eba\uff0e
6+4%1=693设书法小组人数为x,美术小组人数为y.
x=(1-1/4)y
x-6=(1-1/3)y
解得 x=54
y=72
x+y=126
答:——————————略。
或
6÷(1/3-1/4)=72(人)
72×(1-1/4)=54(人)
72+54=126(人)
答:——————————————。
绛旓細瑙o細璁惧弬鍔缇庢湳灏忕粍鐨鏈墄浜恒25%x-6=18 x=96 鍥炵瓟锛氬弬鍔犵編鏈皬缁勭殑鏈96浜恒--- 甯屾湜閲囩撼锛岃阿璋紒
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