Question

calcular 40% de 1000

Answer 1

Explicação passo-a-passo:

$regra \: \: d e \: \: três \: \: simples$

$\dfrac{40}{100} = \dfrac{x}{1000}$

$multiplique \: \: cruzado$

$100x = 40 \times 1000$

$100x = 40000$

$x = \dfrac{40000}{100}$

$x = 400$

Answer 2

$\large\boxed{\begin{array}{lr} \frac{1000}{x} = \frac{100\%}{40\%} \\ \\ 100x = 1000 \times 40 \\ 100x = 40000 \\ x = \frac{ 40000 }{100} \\ \boxed{x = 400} \\ \\ resposta→400\end{array}}$