1.爸爸上月薪金5000元,本月加薪500元,求本月加薪的百分率
2.甲數比乙數多25%,求乙數比甲數少百分之幾
3.橙和梨共252個,橙的數量比梨的數量少25%,求梨有多少個
4.有糖144粒,姊姊拿走25%,妹妹又拿走餘下的25%,求二人拿走多少粒糖
5.甲,乙競走,當甲行30%,乙行了25%時,2人相距50m,求全程長多少米
6.小明將他所有款項的20%,又將餘下的25%,餘下24元。求原有多少元
7.哥哥有閃咭40張,哥哥的閃咭數量比弟弟多25%,求弟弟的閃咭數量
8.陳先生本月薪金是8800元,比上月加10%,求上月薪金
9.甲乙2數之和是20,甲數比乙數小1/3,求甲乙2數
1-7求答案
8-9用方程作答
9條問題!!!
2006-11-02 2:02 am
回答 (2)
2006-11-02 2:45 am
1. 10%
2. 20%
3. pear = 140 (orange =112)
4. 63
5. 1000m
6. $480
7. 32
8. 8800 = 1.10 x (salary)
8800/1.10 = salary
salary = 8000
9. X = 甲, Y = 乙
By substitution
X+Y = 20................(1)
3X = Y.................(2)
Sub (2) into (1)
X + 3X = 20
4X = 20
X = 5 .................... (3)
Sub (3) into (1)
5 + Y = 20
Y = 15................(4)
Therefore, 甲 = 5, 乙 = 15
2. 20%
3. pear = 140 (orange =112)
4. 63
5. 1000m
6. $480
7. 32
8. 8800 = 1.10 x (salary)
8800/1.10 = salary
salary = 8000
9. X = 甲, Y = 乙
By substitution
X+Y = 20................(1)
3X = Y.................(2)
Sub (2) into (1)
X + 3X = 20
4X = 20
X = 5 .................... (3)
Sub (3) into (1)
5 + Y = 20
Y = 15................(4)
Therefore, 甲 = 5, 乙 = 15
參考: Easy job
2006-11-02 2:20 am
1.500/5000 ×100％
3.252×(1－25%)
4.144×〔25%＋(1－25%－25%)〕
7.40－40×(1－25%)
8.設y是上月薪金
y＋(y×10%)＝8800
3.252×(1－25%)
4.144×〔25%＋(1－25%－25%)〕
7.40－40×(1－25%)
8.設y是上月薪金
y＋(y×10%)＝8800
收錄日期: 2021-04-12 22:56:13
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061101000051KK02615