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1.All 40 F.1C students have to play a game.In this game,one boy and one girl are required to form a group before playing.If 4 boys have no partners,how many boys and girls are there in F.1C class?
2.Lewis and Paul had the same amount of money.They went to the post office to buy stamps.Lewis bought six $x stamps and had $2 left.Paul bought four $x stamps and had $10 left.What is the value of x?
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2007-10-24 2:05 am
回答 (3)
2007-10-24 2:31 am
✔ 最佳答案
1. 22boys,18girls2. 4
2007-10-24 2:34 am
2. 6x+2= 4x+10
2x+2=10
2x=8
x=4
1. x : Number of Girls
2x + 4 = 40
2x=36
x=18
girls=18
boys=40- 18=22
2x+2=10
2x=8
x=4
1. x : Number of Girls
2x + 4 = 40
2x=36
x=18
girls=18
boys=40- 18=22
2007-10-24 2:33 am
1)Boys in F.1C class
(40-4)/2+4
=22
Girls in F.1C class
40-22
=18
2) The value of x
6x+2=4x+10
2x=8
x=4
The value of x is 4
(40-4)/2+4
=22
Girls in F.1C class
40-22
=18
2) The value of x
6x+2=4x+10
2x=8
x=4
The value of x is 4
參考: myself
收錄日期: 2021-04-13 14:06:48
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https://hk.answers.yahoo.com/question/index?qid=20071023000051KK01973