Question

calcule a seguinte porcentagem 30% de 30

Answer 1

30-30%

$30\%\:=\frac{30}{100}$

$=\frac{3}{10}$

$=30-\frac{3}{10}$

$=\frac{30\cdot \:10}{10}-\frac{3}{10}$

$=\frac{30\cdot \:10-3}{10}$

${30\cdot \:10-3} = 297$

$\frac{297}{10}$

$30-30\%\:=\frac{297}{10}\quad \left(\mathrm{Decimal:\quad }\:29.7\right)$