Question

In a bag the ratio of red balls to green balls is 4 : 5. what fraction of the balls are red?

Answer 1

Answer:

$\frac{4}{9}$

Step-by-step explanation:

$\frac{red}{green} = \frac{4}{5} \\ \\ let \: \: red \: balls = 4x \\ let \: green \: balls = 5x \\ \\ required \: fraction = \frac{4x}{4x + 5x} = \frac{4}{9}$