Question

Transforme as razões abaixo em porcentagem

a)7/50 b)8/20 c)10/250 d)21/30

Answer 1

Resposta:

Explicação passo a passo:

$a) \frac{7}{50} \\\frac{x}{100} = \frac{7}{50} \\50 . x = 7 . 100\\50x = 700\\x = \frac{700}{50} \\x = 14 %$

$b) \frac{8}{20} \\\frac{x}{100} = \frac{8}{20} \\20 . x = 8 . 100\\20x = 800\\x = \frac{800}{20} \\x = 40 %$

$c) \frac{10}{250} \\\frac{x}{100} = \frac{10}{250} \\250 . x = 10 . 100\\250x = 1000\\x = \frac{1000}{250} \\x = 4 %$

$d) \frac{21}{30} \\\frac{x}{100} = \frac{21}{30} \\30 . x = 21 . 100\\30x = 2100\\x = \frac{2100}{30} \\x = 70 %$