Question

calcule a porcentagem dos valores abaixo (a) 12% de 144 (b) 25% de 1024 (c) 45% de 900 (d) 65% de 1800​

Answer 1

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Regra de três

a)

100%-----> 144

12%-------> x

100 • x= 12 • 144

100x= 1.728

x= 1.728/100

x= 17,28

_________________________

b)

100%------> 1024

25%--------> x

100 • x= 25 • 1024

100x= 25.600

x= 25.600/100

x= 256

_________________________

c)

100%------> 900

45%--------> x

100 • x= 45 • 900

100x= 40.500

x= 40.500/100

x= 405

_________________________

d)

100%------> 1800

65%--------> x

100 • x= 65 • 1800

100x= 117.000

x= 117.000/100

x= 1.170

Answer 2

Resposta:

Explicação passo-a-passo:

a)17,28

b)256

c)405

d)1170

e)263,04

f)30