Question

1-CALCULE AS PORCENTAGENS ABAIXO:

(A)-13% de 20=
(B)-75,4% de 350=
(C)-2% de 8=
(D)-90% de 11,5=
(E)-1% de 120=
(F)-0,6% de 2000=


Por favor me ajudem.

Answer 1

Oi...

a) 13% de 20

100x = 13 . 20

100x = 260

x = 260/100

x = 2,6

b) 75,4% de 350

100x = 75,4 . 350

100x = 26 390

x = 26 390/100

x = 263,9

c) 2% de 8

100x = 2.8

100x = 16

x = 16/100

x = 0,16

d) 90% de 11,5

100x = 90 . 11,5

100x = 1 035

x = 1 035/100

x = 10,35

e) 1% de 120

100x = 1 . 120

100x = 120

x = 120/100

x = 1,2

f) 0,6 % de 2 000

100x = 0,6 . 2 000

100x = 1 200

x = 1 200/100

x = 12

Espero ter ajudado.