Question

The ratio of blue cards to green cards is 2 to 5. There are 8 blue cards. Complete the diagram and explain how you can find the number of green cards.

Answer 1

Answer:

$20\ green\ cards$

Step-by-step explanation:

Let

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

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

we know that

$\frac{x}{y}=\frac{2}{5}$

isolate the variable y

$y=\frac{5}{2}x$ -----> equation A

we have

$x=8\ blue\ cards$

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

$y=\frac{5}{2}(8)=20\ green\ cards$