[tex] \it a)\ \ \dfrac{a}{b} = \dfrac{5}{6} \Rightarrow a=\dfrac{5}{6}b \Rightarrow a\approx0,83b \Rightarrow a \approx 83\%\ din \ b
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b)\ \ \dfrac{a}{b} = \dfrac{5}{6} \Rightarrow b=\dfrac{^{20)}6}{\ \ 5}a \Rightarrow b = \dfrac{120}{100}a \Rightarrow b=120\%\ din \ a
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c)\ \ \dfrac{a}{528}=\dfrac{5}{6} \Rightarrow a = \dfrac{528\cdot5}{6} =88\cdot5=440 [/tex]