Question

Audrey makes a certain shade of blue paint. She uses 3 1/2 quarts of blue paint with 5 quarts of white paint. Her cousin Evan will do the same. He will mix w quarts of white paint with b quarts of blue paint. Which of these equations represents the relationship between w and b ?

Answer 1

b = 0.7w

Explanation:

To make a shade of blue paint :

3 1/2 quarts of blue

5 quarts of white

3 1/2 α 5

7/2 = 5k

Where k is the proportionality constant

k = 7/2 ÷ 5

k = 7/2 * 1/5

k = 7/10

k = 0.7

To mix :

b quartz of blue with w quartz of white

b = kw

b = 0.7w