s
Posted: 30/05-2007 11:52
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a)
[tex]\frac{1000}{800}= \underline{\underline{1,25}}[/tex]
b)
[tex]1,25 = 1 + \frac{p}{100}[/tex]
[tex]- \frac{p}{100} = 1 - 1,25[/tex]
[tex]-\frac{p}{100} = -0,25[/tex]
[tex]\underline{\underline{p = 25 \percent}}[/tex]