Writing a Ratio as a Fraction or Linear Function

A decorator mixes blue, yellow, and white paint. The ratio of blue paint to yellow paint to white paint is $1 : 4 : 7$ .

What fraction of the mixture is white paint?

[2]

A decorator mixes blue, yellow, and white paint. The ratio of blue paint to yellow paint to white paint is $1 : 4 : 7$ .

What fraction of the mixture is white paint?

[2]

Writing a Ratio as a Fraction or Linear Function Questions