Question

a) 14% de R$112,00
b) 4% de R$208,80
c) R$ 104,00 mais 16% de 104,00
d) R$ 60,40 mais 42,5% de R$ 60,40

Answer 1

Olá,

a)

$\frac{112}{100} = \frac{x}{14} \\ \\ 100x = 1568 \\ x = 1568 \div 100 \\ x = 15.68$

b)

$\frac{208.8}{100} = \frac{x}{4} \\ \\ 100x = 835.2 \\ x = 835.2 \div 100 \\ x = 8.352$

c)

$\frac{104}{100} = \frac{x}{16} \\ \\ 100x = 1664 \\ x = 1664 \div 100 \\ x = 16.64 \\ \\ 104 + 16.64 = 120.64$

d)

$\frac{60.4}{100} = \frac{x}{42.5} \\ \\ 100x = 2567 \\ x = 2567 \div 100 \\ x = 25.67 \\ \\ 60.4 + 25.67 = 86.07$

Espero ter ajudado :-) Boa sorte.