Help Will give crown

the answer is actually 4/6 pls give branliest and thanks
Answer:
28 gallons
Step-by-step explanation:
50% full
50% + 7 gallons = 75%
50% + 25% = 75%
25% = 7 gallons
[tex]\frac{25}{100}= \frac{7}{y}[/tex]
25 × y = 100 × 7
25y = 700
25y ÷ 25 = 700 ÷ 25
y = 28