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=
Soluções para a tarefa
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
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)✌