修一条路,已经修完了全程的1\4,又修了其余的1\5,距中点还有6千米,这条路全长多少米?
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/08 09:47:44
![修一条路,已经修完了全程的1\4,又修了其余的1\5,距中点还有6千米,这条路全长多少米?](/uploads/image/z/1597731-51-1.jpg?t=%E4%BF%AE%E4%B8%80%E6%9D%A1%E8%B7%AF%2C%E5%B7%B2%E7%BB%8F%E4%BF%AE%E5%AE%8C%E4%BA%86%E5%85%A8%E7%A8%8B%E7%9A%841%5C4%2C%E5%8F%88%E4%BF%AE%E4%BA%86%E5%85%B6%E4%BD%99%E7%9A%841%5C5%2C%E8%B7%9D%E4%B8%AD%E7%82%B9%E8%BF%98%E6%9C%896%E5%8D%83%E7%B1%B3%2C%E8%BF%99%E6%9D%A1%E8%B7%AF%E5%85%A8%E9%95%BF%E5%A4%9A%E5%B0%91%E7%B1%B3%3F)
xQN@(aha!~!Ę45&BDnJ}$e8Sp/83gu9&8e<\^r?yꗑ4"%7;
~}&pmo65ޣ" z !v Ћd
uLMJj9;Ɩ]br`]V *}X^=t٫@>éYJfd=Bѷ÷|~Xq@,I$-+l*$5ɼ+$`ت4ީ
修一条路,已经修完了全程的1\4,又修了其余的1\5,距中点还有6千米,这条路全长多少米?
修一条路,已经修完了全程的1\4,又修了其余的1\5,距中点还有6千米,这条路全长多少米?
修一条路,已经修完了全程的1\4,又修了其余的1\5,距中点还有6千米,这条路全长多少米?
6÷(1/2-1/4-(1-1/4)*1/5)
=6÷(1/4-3/20)
=6÷2/20
=60千米
6/{(1/2)-(1/4)-[1-(1/4)]*(1/5)]}
=6/[(1/4)-(3/20)]
=6/(1/10)
=60千米
=60000米
这条路全长60000米
6/{(1/2)-(1/4)-[1-(1/4)]*(1/5)]}
=6/[(1/4)-(3/20)]
=6/(1/10)
=60千米
=60000米
这条路全长60000米
设该路全长为x
则1/2x=1/4x+(1-1/4)*1/5x+6000
1/2x=1/4x+3/20x+6000
10x=5x+3x+120000
2x=120000
x=60000
答:这条路全长60000米。