$670 was divided among peter, paul and mary so that peter gets$150
more than paul and paul gets $80more than mary. how much money
did mary get?
請教中一數學問題
2009-08-21 6:12 am
回答 (2)
2009-08-21 6:18 am
✔ 最佳答案
Let x be Mary get :then Paul get (x + 80)
Peter get x + 80 + 150 = (x + 230)
Peter + Paul + Mary = (x+230) + (x+80) + x = 670
3x + 310 = 670
3x = 360
x = 120
So Mary get $120.
2009-08-21 10:46 pm
670-80(2)-150=360
360/3=120
peter gets:120+150+80=$350
paul gets:120+80=$200
mary gets:$120
360/3=120
peter gets:120+150+80=$350
paul gets:120+80=$200
mary gets:$120
收錄日期: 2021-04-21 22:04:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090820000051KK02322