There are $100.
A get $200 more than 2 times of B.
C gets $ 100 less than 3 times of B.
Find how much do A, B, C get.
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2007-06-06 9:05 pm
回答 (5)
2007-06-06 9:16 pm
✔ 最佳答案
好似漏左少少嘢喎.There are $100 <--呢句有 d 問題..
2B+200=A
3B+100=C
未計到喎..
2007-06-07 12:02 am
a= 400 b= 100 c = 200
2007-06-06 9:32 pm
total有3條equations
(1)- a + b + c= 100
(2)- a= 2b+200
(3)- c + 100 =3b
put (2),(3) into (1)
2b+200 +b + 3b -100 =100
6b =0
b=0
so,a =200,c= -100
(1)- a + b + c= 100
(2)- a= 2b+200
(3)- c + 100 =3b
put (2),(3) into (1)
2b+200 +b + 3b -100 =100
6b =0
b=0
so,a =200,c= -100
2007-06-06 9:20 pm
Since, A > 2B, C < 3B
A/2 > B > C/3
100 > B > 33.3
If $100, so A = 50, B = 33.3, C = 16.7
A/2 > B > C/3
100 > B > 33.3
If $100, so A = 50, B = 33.3, C = 16.7
2007-06-06 9:14 pm
a= 400 b= 100 c = 200
收錄日期: 2021-04-13 14:17:49
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https://hk.answers.yahoo.com/question/index?qid=20070606000051KK01478