Answer:
Step-by-step explanation:
1) If [tex]\frac{5}{6}[/tex] is needed to cover [tex]\frac{1}{4}[/tex] than we need 3 more: [tex]\frac{5}{6}(3)=\frac{15}{6} =2\frac{3}{6} gallons
2) But we still need to add the beginning [tex]\frac{5}{6}[/tex]: [tex]2\frac{3}{6}+\frac{5}{6}=2\frac{9}{6}=3\frac{3}6}=3.5[/tex]
