Question

ATIVIDADE 2
1) Quanto é:
a) 3% R$ 330,00?
b) 25 % de 1 000?
c) 75 % de 50,00?
d) 1 % de 100?
e) 10 % de 50? alguem sabe​

Answer 1

Olá,

A)

$\frac{3}{100} = \frac{x}{330} \\ \\ 100x = 990 \\ x = 990 \div 100 \\ x = 9.9$

B)

$\frac{25}{100} = \frac{x}{1000} \\ \\ 100x = 25000 \\ x = 25000 \div 100 \\ x = 250$

C)

$\frac{75}{100} = \frac{x}{50} \\ \\ 100x = 3750 \\ x = 3750 \div 100 \\ x = 37.5$

D)

$\frac{1}{100} = \frac{x}{100} \\ \\ 100x = 100 \\ x = 100 \div 100 \\ x = 1$

E)

$\frac{10}{100} = \frac{x}{50} \\ \\ 100x = 500 \\ x = 500 \div 100 \\ x = 5$

Espero ter ajudado :-) Boa sorte.