Question

The interior paint color Ruby Red is 90% red. Cora uses 99 ounces of red paint to mix a batch of paint. How many total ounces of paint were in the batch? Use any strategy to solve.

Answer 1

The total quantity of paint in the batch is 110 ounces, calculated by dividing 99 ounces of red paint by 0.9 since the red paint makes up 90% of the total batch.

Step-by-step explanation:

The question revolves around finding the total quantity of paint used, given the percentage that a certain amount of red paint contributes to this total. Cora uses 99 ounces of red paint, which accounts for 90% of the total paint. To find the total ounces of paint in the batch, we can set up a simple proportion where 90% (or 0.9) of the total ounces (let's call it T) is equal to 99 ounces:

0.9T = 99 ounces

To find T, we divide both sides of the equation by 0.9:

T = 99 ounces / 0.9

T = 110 ounces

Therefore, the batch of paint had a total of 110 ounces.