You are mixing paint. You decide to mix one cup of blue paint with 3 cups of white paint for a specific shade of light blue. What is another combination of paint that will give you the same shade of blue? Jessica can run 30 meters in 10 seconds. Aya can run 45 meters in 20 seconds. Who can run faster? There are 4 blue marbles and 3 red marbles in a bag. What is the ratio of blue marbles to red marbles?
What is the ratio of red marbles to blue marbles?