Question

resolva com regra de três
a)90%de R$105,00=___
b)35%de R$___=R$28,00

Answer 1

Olá!

a) 100% --- 105
90% --- x

100x = 9.450
x = 9.450 ÷ 100
x = 94,5

Corresponde a 94,50.

b) 100% --- x
35% --- 28

35x = 2.800
x = 2.800 ÷ 35
x = 80

35% de 80 = 28,00

Answer 2

A) 105*90/100 = 94,5

B) x*35/100 = 28,00
35x/100 = 28
35x = 2800
x = 80