Here is a representation showing the amount of red and blue paint that make 2 batches of purple paint. a. On the double number line, label the tick marks to represent amounts of red paint (cups) red and blue paint used to make blue paint (cups) batches of this shade of purple paint. a. How many batches are made with 12 cups of red paint? red paint (cups) + b. How many batches are made with 6 cups of blue paint? blue paint (cups)