Răspuns:
Explicație pas cu pas:
[tex]\it~~~[/tex]
Salutare!
[tex]\it ~~[/tex][tex]\it~~~~~[/tex]
[tex]\bf a)~~ a = 10~si~b = 25[/tex]
[tex]\bf \dfrac{a}{b} = \dfrac{10}{25}^{(5}\implies \boxed{\boxed{\bf \dfrac{a}{b}=\dfrac{2}{5}}}[/tex]
[tex]\it~~~~~~~[/tex]
[tex]\bf b)~~\dfrac{a}{b}=\dfrac{2}{5}=0,4\cdot \dfrac{100}{100} =\dfrac{40}{100}\implies\boxed{\boxed{\bf \dfrac{a}{b}= 40\%}}[/tex]
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