Question

Porcentagem/

• Calcule: 16,2% de 80 =
• Calcule: 25% de 25% =

(se puderem escrever a efetuaçao)​

Answer 1

16,2% de 80

$\frac{80}{x} =\frac{100}{16,2}$

100x = 80 × 16,2

100x = 1.296

x = $\frac{1.296}{100}$

x = 12,96

25% de 25%

25%=$\frac{25}{100} =\frac{1}{4}$

$\frac{25}{x} = \frac{1}{4}$

$\frac{25}{4} = 6,25$%