raphaelbsilva raphaelbsilva
  • 22-09-2014
  • Mathematics
contestada

1)      Um número
somado com sua quarta parte é igual a 80. Qual é esse número? 

Respuesta :

Illuminati750
Illuminati750 Illuminati750
  • 22-09-2014
Hello, 

x= number
x/4=  its fourth

So, 

[tex]x+ \frac{x}{4} =80 \\ \\ \frac{5}{4}x=80 \\ \\ x = \frac{80*4}{5}\\ \\ x=64[/tex]

Answer: the number is 64
Answer Link

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