甲乙两校共有468人，其中男生人数是女生人数的5/4倍……
\u7532\u4e59\u4e24\u6821\u5171\u6709468\u4eba\uff0c\u5176\u4e2d\u7537\u751f\u4eba\u6570\u662f\u5973\u751f\u4eba\u6570\u76845/4\u500d\u2026\u2026\u5206\u6790\uff1a\u5148\u6839\u636e\u7532\u3001\u4e59\u4e24\u6821\u5171\u6709468\u4eba\uff0c\u5176\u4e2d\u7537\u751f\u4eba\u6570\u4e3a\u5973\u751f\u4eba\u6570\u768454
\u500d\uff0c\u5c31\u53ef\u6c42\u51fa\u5973\u751f\u4eba\u6570\uff1a468\u00f7\uff085\4 +1\uff09=208\u4eba\uff0c\u7537\u751f\u4eba\u6570468-208=260\u4eba\uff0c\u518d\u6839\u636e\u7532\u6821\u5973\u751f\u4eba\u6570\u4e3a\u7537\u751f\u4eba\u6570\u76845 \6 \uff0c\u4e59\u6821\u5973\u751f\u4eba\u6570\u4e3a\u7537\u751f\u4eba\u6570\u768429 \40 \uff0c\u5148\u8bbe\u7532\u6821\u7537\u751f6x\u4eba\uff0c\u90a3\u4e48\u4e59\u6821\u7537\u751f260-6x\u4eba\uff0c\u90a3\u4e48\u7532\u6821\u5973\u751f5x\u4eba\uff0c\u4e59\u6821\u5973\u751f\uff08260-6x\uff09\u00d729 \40 \uff0c\u518d\u6839\u636e\u5973\u751f\u603b\u4eba\u6570\u5217\u65b9\u7a0b\u5f0f 5x+\uff08260-6x\uff09\u00d729/40=208 \u5373\u53ef\u6c42\u51fa\u4e00\u4efd\u7684\u4eba\u6570\uff0c\u6700\u540e\u5c31\u53ef\u76f4\u63a5\u6c42\u51fa\u7532\u3001\u4e59\u4e24\u6821\u7537\u5973\u751f\u5404\u81ea\u7684\u4eba\u6570\uff0e\u89e3\u7b54\uff1a\u89e3\uff1a\u5973\u751f\u4eba\u6570\uff1a468\u00f7\uff085 4 +1\uff09=208\uff08\u4eba\uff09\uff0c
\u7537\u751f\u4eba\u6570\uff1a468-208=260\uff08\u4eba\uff09\uff0c
\u8bbe\u7532\u6821\u7537\u751f6x\u4eba\uff0c\u90a3\u4e48\u4e59\u6821\u7537\u751f260-6x\u4eba\uff0c\u90a3\u4e48\u7532\u6821\u5973\u751f5x\u4eba\uff0c\u4e59\u6821\u5973\u751f\uff08260-6x\uff09\u00d729 40 \uff0c
\u6839\u636e\u5973\u751f\u603b\u4eba\u6570\u5217\u5f0f\uff1a
5x+\uff08260-6x\uff09\u00d729 40 =208\uff0c
200x+7540-174x=8320\uff0c
26x=780
x=30\uff0c
\u5219\u7532\u6821\u7537\u751f\u4eba\u6570\uff1a6x=6\u00d730=180\uff08\u4eba\uff09\uff0c
\u7532\u6821\u5973\u751f\u4eba\u6570\uff1a5x=5\u00d730=150\uff08\u4eba\uff09\uff0c
\u4e59\u6821\u7537\u751f\u4eba\u6570\uff1a260-6x=260-180=80\uff08\u4eba\uff09\uff0c
\u4e59\u6821\u5973\u751f\u4eba\u6570\uff1a\uff08260-6x\uff09\u00d729 40 =80\u00d729 40 =58\uff08\u4eba\uff09\uff0c
\u7b54\uff1a\u7532\u6821\u7537\u5973\u751f\u4eba\u6570\u5206\u522b\u662f180\u4eba\u548c150\u4eba\uff1b\u4e59\u6821\u7537\u5973\u5206\u522b\u662f80\u4eba\u548c58\u4eba\uff0e\u70b9\u8bc4\uff1a\u6b64\u9898\u5148\u8ddf\u636e\u524d\u4e24\u4e2a\u6761\u4ef6\u6c42\u51fa\u4e24\u6821\u7537\u751f\u548c\u5973\u751f\u7684\u603b\u4eba\u6570\uff0c\u518d\u6839\u636e\u500d\u6570\u5173\u7cfb\u8bbe\u51fa\u7532\u6821\u7537\u751f6x\u4eba\uff0c\u5219\u5973\u751f\u5c31\u662f5x\uff0c\u4e59\u6821\u7684\u7537\u5973\u751f\u4eba\u6570\u662f\u7528\u542b\u6709x\u7684\u5f0f\u5b50\u8868\u793a\u51fa\u6765\uff0c\u6700\u540e\u6839\u636e\u4e24\u6821\u5973\u751f\u603b\u4eba\u6570\u5171208\u4eba\uff0c\u5217\u65b9\u7a0b\u6c42\u51fax\u662f\u89e3\u51b3\u6b64\u9898\u7684\u5173\u952e\uff0e
1/9\u7b54\u6848\u4e00\u6837
1.女生=468÷(1+5/4)=208人男生=468-208=260人
设甲校有X个男生
5X/6+(260-X)*29/40=208
5X/6+188.5-29X/40=208
13X/120=19.5
X=180
甲校=180×(1+5/6)=330人
乙校=468-330=138人
解：
女生=468÷(5/4+1)=208人
男生=468-208=260人
设甲校男生6X人 那么乙校男生260-6X人
那么甲女生5X人
根据女生人数列式;
5X+(260-6X)×29/40=208
200X+7540-174X=8320
26X=780
X=30
那么甲校男女分别是180人和150人
乙校男女分别是80人和58人
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