3 years ago

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

1 answer:

5 0

Hello,

x= number
x/4= its fourth

So,

$x+ \frac{x}{4} =80 \\ \\ \frac{5}{4}x=80 \\ \\ x = \frac{80*4}{5}\\ \\ x=64$

Answer: the number is 64

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