Question

1. Calcule as seguintes porcentagens.

a) 32% de R$ 820,00

b) 15% de R$ 150,00

c) 18% de R$ 253,35
pf me ajudem eu preciso disso para hj

Answer 1

Explicação passo-a-passo:

a )

$\sf \frac{820}{100} = \frac{x}{32}$

$\sf \frac{41}{5} = \frac{x}{32}$

$\sf 5x = 1312$

$\sf x = \frac{1312}{5}$

$\boxed{\boxed{\sf x = 262,4 }}$

b )

$\sf \frac{150}{100} = \frac{x}{15}$

$\sf \frac{3}{2} = \frac{x}{15}$

$\sf 2x = 45$

$\sf x = \frac{45}{2}$

$\boxed{\boxed{\sf x = 22,5}}$

c )

$\sf \frac{253.35}{100} = \frac{x }{18}$

$\sf 2.5335 = \frac{x}{18}$

$\boxed{\boxed{\sf x = 45,603 }}$