Answer:
x = 15
Step-by-step explanation:
75 + 10x = 225
subtract 75 from both sides
10x = 150
divide both sides by 10
x = 15
Finley can make 5 batches of her favorite orange paint if she has 15 liters of red paint. You can find this by dividing 15 by 3. The information about the yellow paint is unnecessary information and can be overlooked in the context given, and by dividing 15 by 3, you get 5.