Question

Calcule as porcentagens:
A)70% de 300=
B)45% de 600=
C)5% de 400=
D)15% de 400=
E)30% de 600=
F)55% de 500=

Answer 1

Resposta:

A=210

B=270

C=20

D=60

E=180

F=275

Explicação passo a passo:

pode ser respondido com regra de 3:

A) 300______100%

        x_______70%

100x=21000

x=21000/100

x=210

B) 600______100%

        x______45%

100x=27000

x=27000/100

x=270

C) 400_____100%

        x_____5%

100x=2000

x=2000/100

x=20

D) 400_____100%

        x_____15%

100x=6000

x=6000/100

x=60

E) 600_____100%

        x_____30%

100x=18000

x=18000/100

x=180

F)500_______100%

       x_______55%

100x=27500

x=27500/100

x=275

Answer 2

Resposta:

A)210

B)270

C)20

D)60

E)180

F)275

Explicação passo-a-passo:

A)

300           100%

  x                70%

100x= 300×70

100x=21000

x=21000/100

x=210

B) 600           100%

        x              45%

100x=600×45

100x=27000

x=27000/100

x=270

C) 400          100%

         x             5%

100x=400×5

100x=2000

x=2000/100

x=20

D)

400         100%

  x             15%

100x=400×15

100x=6000

x=6000/100

x=60

E)600           100%

   x              30%

100x=600×30

100x=18000

x=18000/100

x=180

F)

500            100%

  x                55%

100x=500×55

100x=27500

x=27500/100

x=275

(ESPERO TER AJUDADO)✌