甲乙丙三人为一组参加接力赛,甲跑了全程的4分之1,乙跑了50米,丙接着跑了全程的3分之1,接力赛全
\u7532\u4e59\u4e19\u4e09\u4eba\u63a5\u529b\u8d5b\uff0c\u7532\u8dd1\u4e86\u5168\u7a0b\u7684\u56db\u5206\u4e4b\u4e00\uff0c\u4e59\u8dd1\u4e8650\u7c73\uff0c\u4e19\u63a5\u7740\u8dd1\u5b8c\u5168\u7a0b\u7684\u4e09\u5206\u4e4b\u4e00\uff0c\u63a5\u529b\u8d5b\u5168\u7a0b\u591a\u5c11\u7c73\u5217\u5f0f\uff1a(1/4)X+50+(1/3)X=X
\u89e3\u5f97 X=120
\u6240\u4ee5\uff0c\u5168\u7a0b120\u7c73
\u628a\u4e00\u5708\u7684\u957f\u770b\u6210\u5355\u4f4d1\uff0c\u7532\u3001\u4e59\u3001\u4e19\u5206\u522b\u8dd1\u4e861/4\u3001(1-1/4-1/3)\u30011/3\uff0c
\u5df2\u77e5\u4e19\u6bd4\u7532\u591a\u8dd110\u7c73\uff0c\u6240\u4ee5
\u4e00\u5708\u5168\u957f\u4e3a 10/(1/3-1/4)=120\uff08\u7c73\uff09
\u4e59\u8dd1\u4e86 120*(1-1/4-1/3)=50\uff08\u7c73\uff09
=1
7/12+50=1
6/12=50
3/12=25
答案=25*4=100
解答:50÷(1-1/4-1/3)=120米
150米
50÷(1-1/4-1/3)=120
绛旓細1-4鍒嗕箣1-3鍒嗕箣1=12鍒嗕箣5 50闄や互12鍒嗕箣5=120绫
绛旓細鐢蹭箼淇╀汉璺戠殑璺▼姣旀槸5锕4=15:12 涔欎笝涓や汉璺戠殑璺▼姣旀槸6锕7=12:14 鍒鐢蹭箼涓璺戠殑璺▼姣旀槸锛15:12:14
绛旓細鐢蹭箼涓欎笁浜烘帴鍔璧涜窇,鐢璺戜簡鍏ㄧ▼鐨1/4,涔欒窇浜嗗叏绋嬬殑1/4锛屼笝璺戜簡鍏ㄧ▼鐨1/3锛屽垯涔欒窇浜嗗灏戠背锛熷皯鏉′欢锛熶竴杈嗗杞﹀彧鏈3/2鐨勫骇浣嶅潗浜嗕箻瀹傚鏋滀箻瀹㈠啀澧炲姞6浜猴紝鍒欑┖搴т綅鏄凡鍧愬骇浣嶇殑1/4锛岃繖杈嗚溅鍏辨湁澶氬皯涓骇浣嶏紵寮濮嬫椂绌轰綅鍗犲叏閮細1-2/3=1/3 鍚庢潵绌轰綅鍗犲叏閮細1/4[1+1/4]=1/5 绌轰綅鍑忓皯6...
绛旓細涔欒窇浜嗗叏绋嬬殑鍑犲垎涔嬪嚑锛1-(1/4)-(1/3)=5/12 鎺ュ姏姣旇禌鍏ㄧ▼澶氬皯绫筹細50/(5/12)=120绫
绛旓細涓璺5/12 鐢叉瘮涓欏皯璺5/12-1/4=1/6 灏10绫 璺戦亾涓60绫 涔欒窇60/3=20绫
绛旓細1-1/4-1/3 =12/12-3/12-4/12 =5/12 50绫趁5/12=120绫 绛旓細涔欒窇浜嗗叏绋嬬殑鍗佷簩鍒嗕箣浜旓紝鍏ㄧ▼鏄120绫
绛旓細绛旀1-1/4-1/3=5/1250/(5/12)=120绫硏-1/4x-1/3x=505/12x=50x=120
绛旓細绛旀 1-1/4-1/3=5/12 50/(5/12)=120绫 x-1/4x-1/3x=505/12x=50x=120
绛旓細50绫炽備笁鍒嗕箣涓鍑忓洓鍒嗕箣涓绛変簬鍗佷簩鍒嗕箣涓涔熷氨鏄10绫筹紝鎵浠ュ叏绋120绫炽
绛旓細1-4鍒嗕箣涓-5鍒嗕箣浜=20 鍒嗕箣13 70闄や互20鍒嗕箣7=200m