Answer:

Step-by-step explanation:
Details:
→ For Purple People Eater, 3 pints of red paint were used for every 5 pints of blue paint.
Thus, The red to blue paint ratio is 3:5
→ For Purple Majesty, the ratio of blue paint to red paint is 7 to 4.
This means The ratio of red paint to blue paint is 4:7
To determine:
1) Compare the ratios of red to blue paint.

2) The fraction form of the Purple People Eater ratio is:

3) The fraction form for Purple Majesty is:

4) To compare these fractions, create a common denominator.
For a common denominator,
Multiply the numerator and denominator by 4 in 

Multiply the numerator and denominator by 5 in 

The common denominator is 20.