Question

Para as frações irredutíveis abaixo, determine as porcentagens correspondentes.

a) 1/5

b) 4/5

c) 9/20



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Answer 1

a) 1/5 = x/100

5x = 1.100

x = 100/5

$\color{blue}{x = 20}$

Será 20%

.

b) 4/5 = x/100

5x = 4.100

x = 400/5

$\color{blue}{x = 80}$

Será 80%

.

c) 9/20 = x/100

20x = 9.100

x = 900/20

$\color{blue}{x = 45}$

Será 45%