Question

calcule as porcentagens 12,5% de 18000

Answer 1

utilizando regra de 3 temos:

18000 = 100%

x           =  12,5%

Logo:

12,5.18000 = 100x

x = 225000/100

x = 2.250

Answer 2

Regra de 3:

$\mathtt{~~~\%~~~~~~N\º}} \\ \mathtt{100~~~~~18.000} \\ \mathtt{12,5~~~~~~~x} \\ \\ \mathtt{Multiplicar~cruzado} \\ \\ \mathtt{100x= 18.000~.~12,5} \\ \mathtt{100x = 225.000} \\ \mathtt{x = 225.000\div100} \\ \mathtt{x = 2.250} \\ \\ \\ \boxed{\boxed{\mathtt{Resposta: 2.250}}}$