Answer:
51.5 gallons.
Step-by-step explanation:
Given that amount of gallons of paint used by Alisa [tex]=\frac{3}{4}[/tex]
Given that amount of gallons of paint used by Better [tex]=50+\frac{3}{4}[/tex]
Now we need to find about how many gallons of paint do they use together. To find that we just need to amount of gallons used by both.
[tex]\frac{3}{4}+50+\frac{3}{4}[/tex]
[tex]=\frac{3}{4}+\frac{3}{4}+50[/tex]
[tex]=\frac{6}{4}+50[/tex]
[tex]=1.5+50[/tex]
[tex]=51.5[/tex]
Hence final answer is 51.5 gallons.