Question

Escreva na forma de razão as seguintes porcetagens: a)68% b)2% c)139% d)25%

Answer 1

Explicação passo-a-passo:

$\textrm{a )}\ 68\%=\dfrac{68}{100}=\dfrac{68\div2}{100\div2}=\dfrac{34}{50}=\dfrac{34\div2}{50\div2}=\dfrac{17}{25}\\\\\\\textrm{b )}\ 2\%=\dfrac{2}{100}=\dfrac{2\div2}{100\div2}=\dfrac{1}{50}\\\\\\\textrm{c )}\ 139\%=\dfrac{139}{100}\ \textrm{(Irredut\'ivel)}\\\\\\\textrm{d )}\ 25\%=\dfrac{25}{100}=\dfrac{25\div5}{100\div5}=\dfrac{5}{25}=\dfrac{5\div5}{20\div5}=\dfrac{1}{4}$

Answer 2

Explicação passo-a-passo:

$4a)68\% = \frac{68}{100} = \div \frac{4}{4} = \frac{17}{25}$

$b)2\% = \frac{2}{100} \div \frac{2}{2} = \frac{1}{50}$

$c)139\% = \frac{139}{100}$

$d)25\% = \frac{25}{100} \div \frac{4}{4} = \frac{1}{4}$

bons estudos!