Question

Calcule o valor das porcentagens abaixo: a)25% De 800 b)55% de 2500 c)12% de 600 d)32% de 1800 e)38% de 7200 f)62% de 900 com cálculos por favor!

Answer 1

$Olá...$

Regra de três

a)

100%-----> 800

25%-------> x

100 • x= 25 • 800

100x= 20.000

x= 20.000/100

x= 200

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b)

100%------> 2500

55%--------> x

100 • x= 55 • 2.500

100x= 137.500

x= 137.500/100

x= 1.375

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c)

100%------> 600

12%---------> x

100 • x= 12 • 600

100x= 7.200

x= 7.200/100

x= 72

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d)

100%------> 1800

32%--------> x

100 • x= 32 • 1.800

100x= 57.600

x= 57.600/100

x= 576

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e)

100%------> 7200

38%--------> x

100 • x= 38 • 7.200

100x= 273.600

x= 273.600/100

x= 2.736

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f)

100%-------> 900

62%---------> x

100 • x= 62 • 900

100x= 55.800

x= 55.800/100

x= 558