Question

Alguém me ajuda.
Calcule o valor das porcentagens.
35% de 400 reais
15% de 850 reais
7% de 1300 reais
Obs: precisa de contas

Answer 1

$\Large\boxed{\begin{array}{l}\sf R\ \,400/100\%=x/35\%\\\sf100x=14.000\\\sf x=14.000/100\\\sf x=R\ \,140{,}00~\checkmark\end{array}}$

$\Large\boxed{\begin{array}{l}\sf R\ \,850/100\%=x/15\%\\\sf100x=12.750\\\sf x=12.750/100\\\sf x=R\ \,127{,}50~\checkmark\end{array}}$

$\Large\boxed{\begin{array}{l}\sf R\ \,1.300/100\%=x/7\%\\\sf100x=9.100\\\sf x=9.100/100\\\sf x=R\ \, 91{,}00~\checkmark\end{array}}$

Answer 2

Explicação passo-a-passo:

a) 0,35x400=140

b)0,15x850=127,5

c)0,07x1300=91