1.What number exceeds 25 by the same amount as it falls short of 49?
2.One number is twice another,and five times the smaller added to three times the greater amounts to 143;find the numbers.
3.A sum of $135 is divided between A,B.and C,so that B has $10 more than A,and C has three times as much as A;find the share of each.
請幫忙!!
Thx~
Maths.
2007-08-23 10:02 pm
回答 (1)
2007-08-23 10:45 pm
✔ 最佳答案
2.) x=2y5y=3x=143
5y=6y=143
y=13
2007-08-23 14:48:58 補充：
3.) a b c =135b=a 10c=3aa (a 10) 3a =1355a=125a=25, b=35, c=75
收錄日期: 2021-04-13 18:18:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070823000051KK02473