Answer:
32 quarts
Step-by-step explanation:
Amount of red paint used [tex]r=1\dfrac{1}{2}=\dfrac{3}{2}\ \text{quarts}[/tex]
Amount of white paint used [tex]w=12\ \text{quarts}[/tex]
Ratio of red paint to white paint is
[tex]\dfrac{r}{w}=\dfrac{\dfrac{3}{2}}{12}=\dfrac{1}{8}[/tex]
Amount of red paint used later is [tex]4\ \text{quarts}[/tex]
[tex]\dfrac{r}{w}=\dfrac{1}{8}\\\Rightarrow \dfrac{4}{w}=\dfrac{1}{8}\\\Rightarrow w=8\times 4=32\ \text{quarts}[/tex]
The amount of white paint used is 32 quarts.
