Question

Quanto é 35% de 550?

Answer 1

Explicação passo-a-passo:

A resposta correta é: 192.5

Answer 2

$\sf 35\%\:550\\\\\\=\dfrac{7}{20}\cdot \:550\\\\\\{Fatorar\:o\:número:\:}\:550=10\cdot \:55\\\\\\\dfrac{7}{20}\cdot \:10\cdot \:55\\\\\\{Fatorar\:o\:número:\:}\:20=10\cdot \:2\\\\\\=\dfrac{7}{10\cdot \:2}\cdot \:10\cdot \:55\\\\\\{Faca\:o\:cancelamento\:cruzado\:do\:fator\:comum:}\:10\\\\\\=\dfrac{7}{2}\cdot \:55\\\\\\{Aplicar\:as\:propriedades\:das\:fracoes}:\quad \dfrac{a}{b}\cdot c=\dfrac{a\cdot c}{b}\\\\\\\dfrac{7}{2}\cdot \:55=\dfrac{7\cdot \:55}{2}$

$\sf =\dfrac{7\cdot \:55}{2}\\\\\\{Multiplicar\:os\:números:}\:7\cdot \:55=385\\\\\\\to \boxed{\sf \frac{385}{2}\approx192,5}$