Question

Calcule o total de massas de:

A)50% de 500 gramas:______
B)10% de 800 gramas:_______
C)10% de 40 gramas:_______
D)20% de 250 gramas:______​

Answer 1

Explicação passo-a-passo:

a) 50 * 500 / 100 = 250

b) 10 * 800 / 100 = 80

c) 10 * 40 / 100 = 4

d) 20 * 250 / 100 = 5

Answer 2

$a) \\ \\ \sf \: 50 \times 500 = 25.000 = > \frac{25.000}{100} = \red{250}$

$b) \\ \\ \sf \: x = \dfrac{(10 \times 800)}{100} \\ \\ \sf \: x = \dfrac{800}{10} \\ \\ \sf \: \red{x = 80}$

$c) \\ \\ \sf \: x = \frac{(10 \times 40)}{100} \\ \\ \sf \: x = \frac{400}{100} \\ \\ \sf \: \red{x = 4}$

$d) \\ \\ \sf \: x = \frac{20 \times 250}{100} \\ \\ \sf \: x = \frac{5.000}{100} \\ \\ \sf \: \red{x = 50}$

Obs : x = total de massas !