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cathy
 Post subject: Arithmetic (Percent) page33
PostPosted: Wed Oct 27, 2010 6:48 am 
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Joined: Thu Oct 21, 2010 5:19 am
Posts: 16
Dear vp_help,

Am I right to these questions? Thanks again for your help! :D

-"What is 3 increased by 500%?"

my answer: 3* (1+500%)=18

-"what is 4 decreased by 250%?"

4*(1-250%)=-6

-"When 4 decreases to -2,what is the percent decrease?"

(-2-4)/4=-3/2=-150%

Therefore,150 percent decrease
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VP_Help
 Post subject: Re: Arithmetic (Percent) page33
PostPosted: Wed Oct 27, 2010 6:09 pm 
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Joined: Thu Feb 12, 2009 6:32 pm
Posts: 497
-"What is 3 increased by 500%?"

3 + 3* 5 = 18

-"what is 4 decreased by 250%?"

4 - 2.5 * 4 = -6

-"When 4 decreases to -2,what is the percent decrease?"

(-2 - 4)/4 = -6/4 = -150%


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