Answer:
12 oz of red paint should be mixed.
Step-by-step explanation:
Ratio in which red and white colors are mixed = 3 : 5
Let the total amount of paint prepared with red and white color = x oz
Amount of yellow paint used = [tex]\frac{5}{3+5}\times x[/tex]
= [tex]\frac{5x}{8}[/tex] oz
Since, amount of yellow paint mixed = 20 oz
Therefore, [tex]\frac{5x}{8}=20[/tex]
[tex]x=20\times \frac{8}{5}[/tex]
[tex]x=32[/tex] oz
Total amount of paint = 32 oz
Amount of red paint mixed = Total amount of paint - Amount of yellow paint mixed
= 32 - 20
= 12 oz
Therefore, 12 oz of red paint should be mixed.
