To mix a particular shade of purple paint, red and blue paint are mixed in the ratio 5:3. To make 20 gallons of purple paint how much blue and red paint should be used

12.5 gallons red paint

7.5 gallons blue paint

Step-by-step explanation:

Set up the ratios equal to each other and solve for x

when mixing 5 parts red and 3 parts blue you get a total of 8

5/8 = x/20 x = 12.5 gallons red paint

3/8 = x/20. x = 7.5 gallons blue paint