甲数与乙数的比是5：8，甲数比乙数少（）%，乙数比甲数多几分之几？
\u7532\u6570\u4e0e\u4e59\u6570\u7684\u6bd4\u662f5\uff1a8\uff0c\u7532\u6570\u6bd4\u4e59\u6570\u5c11\uff08 \uff09%\uff0c\u4e59\u6570\u6bd4\u7532\u6570\u591a\u51e0\u5206\u4e4b\u51e0\u7532\u6570\u4e0e\u4e59\u6570\u7684\u6bd4\u662f5\uff1a8\uff0c\u7532\u6570\u6bd4\u4e59\u6570\u5c11\uff0837.5 \uff09%\uff0c\u4e59\u6570\u6bd4\u7532\u6570\u591a5\u5206\u4e4b3
\u5f88\u9ad8\u5174\u4e3a\u60a8\u89e3\u7b54\uff0c\u795d\u4f60\u5b66\u4e60\u8fdb\u6b65\uff01\u3010the1900\u3011\u56e2\u961f\u4e3a\u60a8\u7b54\u9898\u3002
\u6709\u4e0d\u660e\u767d\u7684\u53ef\u4ee5\u8ffd\u95ee\uff01\u5982\u679c\u60a8\u8ba4\u53ef\u6211\u7684\u56de\u7b54\u3002
\u8bf7\u70b9\u51fb\u4e0b\u9762\u7684\u3010\u9009\u4e3a\u6ee1\u610f\u56de\u7b54\u3011\u6309\u94ae\uff0c\u8c22\u8c22\uff01
\u5982\u679c\u6709\u5176\u4ed6\u9700\u8981\u5e2e\u52a9\u7684\u9898\u76ee\uff0c\u60a8\u53ef\u4ee5\u6c42\u52a9\u6211\u3002\u8c22\u8c22\uff01\uff01
\u5047\u8bbe\u7532\u4e3aY\uff0c\u4e59\u4e3aX\uff0c\u7531\u4e8e\u7532\u662f\u4e59\u76845/8\uff0c\u5f97\u5230Y=(5/8)X\uff0cX=(8/5)Y
\u8981\u60f3\u77e5\u9053\u7532\u6570\u6bd4\u4e59\u6570\u5c11\u591a\u5c11\uff0c\u5c31\u4ee5\u4e59\u6570\u4e3a\u57fa\u51c6\uff0c\u5c06\u7532\u6570\u7528\u4e59\u6570\u8868\u793a
X-Y=X-(5/8)X=(3/8)X \u53ef\u89c1\u7532\u6570\u6bd4\u4e59\u6570\u5c113/8
\u8981\u60f3\u77e5\u9053\u4e59\u6570\u6bd4\u7532\u6570\u591a\u51e0\u5206\u4e4b\u51e0\uff0c\u5c31\u4ee5\u7532\u6570\u4e3a\u57fa\u51c6\uff0c\u5c06\u4e59\u6570\u7528\u7532\u6570\u8868\u793a
X-Y=(8/5)Y-Y=\uff083/5)Y \u53ef\u89c1\u4e59\u6570\u6bd4\u7532\u6570\u591a3/5
(8x-5x)/8x×100%=3x/8x×100%=37.5%
(8x-5x)/5x×100%=3x/5x×100%=60%
答：甲数比乙数少37.5%，乙数比甲数多60%
37.5 5分之3
绛旓細绛旓細鐢叉暟涓庝箼鏁扮殑姣旀槸5锛8,鐢叉暟姣斾箼鏁板皯8鍒嗕箣3,涔欐暟姣旂敳鏁板5鍒嗕箣3.
绛旓細鐢叉暟涓庝箼鏁扮殑姣旀槸5锛8锛岀敳鏁版瘮涔欐暟灏戯紙37.5锛%锛屼箼鏁版瘮鐢叉暟澶5鍒嗕箣3
绛旓細8-5=3 3梅8=38 3梅5=35 绛旓細鐢叉暟姣涔欐暟灏38锛屼箼鏁版瘮鐢叉暟澶35锛庢晠绛旀涓猴細38锛35锛
绛旓細(8-5)梅8脳100%=37.5 (8-5)梅5=3/5 鎵浠鐢叉暟姣涔欐暟灏戠櫨鍒嗕箣37.5 涔欐暟姣旂敳鏁板5鍒嗕箣3
绛旓細锛8-5锛夛級梅8=3梅8=37.5%鏁呴夛細B锛
绛旓細鐢叉暟涓庝箼鏁扮殑姣旀槸5锔8,鐢叉暟姣涔欐暟灏戝嚑鍒嗕箣鍑狅細锛8-5锛壝8=3/8=37.5 涔欐暟姣旂敳鏁板:(8-5)梅5=3/5=锛60锛夛躬
绛旓細鐢蹭箼涓鏁扮殑姣旀槸浜旀瘮鍏紝鐢叉暟鏄涔欐暟鐨8鍒嗕箣5锛屼箼鏄鐢茬殑1.6鍊嶏紝鐢叉槸鐢蹭箼鍜岀殑13鍒嗕箣5锛屼箼鏁版槸鐢蹭箼涓鏁板拰鐨13鍒嗕箣8銆
绛旓細鐢叉暟涓庝箼鏁扮殑姣旀槸5锛8锛鎶婄敳鏁扮湅鎴5浠斤紝涔欐暟灏辨槸8浠斤紱5梅锛5+8锛夛紝=5梅13锛屸増38.46%锛涳紙8-5锛壝8锛=3梅8锛=37.5%锛涚瓟锛氱敳鏁板崰涓ゆ暟鍜岀殑 38.46%锛岀敳鏁版瘮涔欐暟澶 37.5%锛庢晠绛旀涓猴細38.46锛37.5锛
绛旓細鐢叉暟鍜屼箼鏁扮殑姣旀槸5锛8锛岀敳鏁版瘮涔欐暟灏戯紙3锛/锛8锛変箼鏁版瘮鐢叉暟澶氾紙3锛夛紡锛5锛
绛旓細锛8-5锛壝8锛=3梅8锛=37.5%锛涳紙8-5锛壝5锛=3梅5锛=60%锛涚瓟锛氱敳姣斾箼灏 37.5%锛屼箼姣旂敳澶 60%锛庢晠绛旀涓猴細37.5锛60锛
