Answer:
0.625 gallons
Explanation:
1 gallon = 4 quarts
2 gallons = 2 × 4 quarts = 8 quarts
She used = 5 quarts
Usage of paint the front porch swing = quart = 0.5 quart
used paint = 5 + 0.5 = 5.5 quarts
subtract used paint by starting amount
paint that was not used= 8 quarts - (5.5 quarts) = 2.5 quarts.
used green paint is 2.5 quarts or 0.625 gallons.