In a school there were 800students and 1000students in 2003 and 2004respectively. The number of students in 2005 is 5% less than that in 2004.
(a) find the percentage increase in the number of students from 2003 to 2004.
(b) find the increase in the number of students from 2003 to 2005.
(c) find the percentage decrease in the number of students from 2003 to 2005
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2008-01-02 7:14 am
回答 (2)
2008-01-02 7:22 am
✔ 最佳答案
(a) (1000-800)/800=25%(b) number of students in 2005 = 1000*(1-5%) = 950
increase in the number of students from 2003 to 2005 = 950 - 800 = 150
(c) (800-950)/800=18.75%
2008-01-02 7:26 am
(a) (1000-800)/800 x 100% = 25%
(b) (1000x95%)-800 = 150
(c) (1000x95%-800)/950 x 100% = 15.79%
(b) (1000x95%)-800 = 150
(c) (1000x95%-800)/950 x 100% = 15.79%
參考: 自己
收錄日期: 2021-04-13 14:50:57
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