Given a rectangle.If its length is increased by 18%,while its width is decreased by30%,find the percentage changa in the rectangle.
the sales of a product in Year2 xceeded thoes in year1 by20%,while the sales of yhe same product in Year2 by 20%.Find the percentage in the sales of the product between Year1 and Year3
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2007-07-21 7:07 pm
回答 (2)
2007-07-21 7:15 pm
✔ 最佳答案
(1+18%) x (1-30%) = 82.6% , percentage change = 1- 82.6%, = -17.4%(1+20%) x (1-20%) = 96%, percentage change = 1-96%, = -4%
2007-07-21 7:21 pm
1.
new area=1.18X0.7=0.826
so change=(1-0.826)X100%=decrease 17.4%
2.
year 3 sales= 1.2X1.2=1.44
so change= (1.44-1)x100%=increase 44%
new area=1.18X0.7=0.826
so change=(1-0.826)X100%=decrease 17.4%
2.
year 3 sales= 1.2X1.2=1.44
so change= (1.44-1)x100%=increase 44%
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