数学题:甲、丙两组人比乙组人数多2倍还多2人

  • 时间:2020-05-11 16:38:51
  • 分类:数学世界
  • 阅读:135 次

数学题:甲、乙、丙三个组人数的比是2:3:5,甲、丙两组人比乙组人数多2倍还多2人,求各组人数?(由“劣徒”同学提出)

数学题解答(“保护色”同学解答):用方程解答如,设每份人数是x人。根据“甲、丙两组人比乙组人数多2倍还多2人”来列方程。

2x + 5x – 2 = 3x × 2

7x – 2 = 6x

x = 2

甲组:2x= 2 × 2 = 4

乙组:3x= 3 × 2 = 6

丙组:5x= 5 × 2 = 10

推荐阅读:
7 Top Image Compression Plugins For Your WordPress Blog  3 Ways to Convert Blog Readers to Leads  7 Ways To Deal With AdBlock Users If You’re A Blogger  2020 Design Trends [Infographic]  8 Content Marketing Plugins You Need For Your WordPress Blog  Tips to Make Money from the Comfort of Your Own Home  5 Tips for Protecting Your Freelance Business from Liabilities  5 Easy Ways On How To Build An Authority Website  How to Protect Your WordPress Site From Hackers  Top 10 Relationship Blogs With the Best Pieces of Advice in 2020 
评论列表
添加评论