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in aschool there were 800 students and 1000 student in 2003 to 2004respectively the number of students in 2005 is5% less than that in 2004 find
(A)the percentage increase in the number of students from 2003 to2004
percentage increase in the number of students from 2003 to 2004
= (1000-800)/800 * 100%
= 200/800 * 100%
= 25%
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(B)the increase/decrase in the number of student from 2003 to 2005
Number of students in 2005
= 1000 * (1-5%)
= 1000 * 95%
= 1000 * 0.95
= 950
As 950 > 800, so there's increase from 2003 to 2005
Number of students increase from 2003 to 2005
= 950 - 800
= 150

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(ii)the percentage increase/decrease in the number of students from 2003 to 2005

Percentage increase in the number of students from 2003 to 2005
= (950-800)/800 * 100%
= 150/800 * 100%
= 18.75%

A.1000-800/800 x100% =25%
B.1000x(1-5%) =950(2005)
950-800/800 x 100% = you think