CPM Homework Help : CC1MN Problem 3-98

A seed mixture contains ryegrass and bluegrass. If $40\%$ of the mixture is ryegrass, what is the ratio of ryegrass to bluegrass?

Hint:

If $40\%$ of the mixture is ryegrass, what is the percentage of bluegrass?

Step 1:

ryegrass = $40\%$ , bluegrass = $60\%$

Step 2:

$\frac{\text{ryegrass}}{\text{bluegrass}}=\frac{40}{60}$

Step 3:

$\frac{40}{60}=\frac{4}{6}=\frac{2}{3}$