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There are 20 pens in a package. Ten of the pens are black,8 are blue,and the rest is red. Which ratio represents the number of red pens to black pens?

Respuesta :

Total number of pens in a package = 20

Number of black pens = 10

Number of blue pens = 8

Number of red pens = [tex]20-(10+8)=2[/tex]

The ratio that represents the number of red pens to black pens is=

[tex]\frac{2}{10}=\frac{1}{5}[/tex] or 1:5

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