Question

6,5% de R$ 8.000,00=

8% de R$ 250.000,00=

12% de 10.800,00=

-------------------------
15% de R$ 2.500,00 =

5% de 4.000,00=

15% de 500 gramas =

20% de 700 livros=

Quem puder me ajudar, agradeço!

Answer 1

a)8.000 = 100
x = 6,5

52.000 = 100x
52.000/100 = x
520=x

b) 250.000=100
x=8
2.000.000=100x
2.000.000/100=x
20.000

c)10.800=100
x=12
129.600=100x
129.600/100=x
1.296=x

d) R$2.500 =100
R$x=15
37.500=100x
37.500/100=x
R$375=x

e) 4.000=100
x=5
20.000=100x
20.000/100=x
200=x

f)500gramas=100
x gramas=15

7.500=100x
7.500/100=x
75gramas=x

g)700 livros= 100
x livros= 20
14.000=100x
14.000/100=x
140 livros=x

Answer 2

Explicação passo-a-passo:

a)

100% ———— 8000

6,5% ————— x

100x = 6,5.8000

100x = 52000

x = 52000/100

x = 520

b)

100% ———— 250000

8% —————— x

100x = 8.250000

100x = 2000000

x = 2000000/100

x = 20000

c)

100% ———— 10800

12% ————— x

100x = 12.10800

100x = 129600

x = 129600/100

x = 1296

d)

100% ———— 2500

15% ————— x

100x = 15.2500

100x = 37500

x = 37500/100

x = 375

e)

100% ———— 4000

5% —————— x

100x = 5.4000

100x = 20000

x = 20000/100

x = 200

f)

100% ————— 500 gramas

15% —————— x

100x = 15.500

100x = 7500

x = 7500/100

x = 75 gramas

g)

100% ————— 700 livros

20% —————— x

100x = 20.700

100x = 14000

x = 14000/100

x = 140 livros