Respuesta :

calculista

Answer:

[tex]20\ green\ cards[/tex]

Step-by-step explanation:

Let

x------> the number of blue cards

y-----> the number of green cards

we know that

[tex]\frac{x}{y}=\frac{2}{5}[/tex]

isolate the variable y

[tex]y=\frac{5}{2}x[/tex] -----> equation A

we have

[tex]x=8\ blue\ cards[/tex]

substitute the value of x in the equation A to find the value of y

[tex]y=\frac{5}{2}(8)=20\ green\ cards[/tex]