Answer:
7
Explanation:
Divide the total wall space by the amount in 1 gallon: 4200/600= 7
So you would need 7 gallons to paint the whole wall.
Is that what you were looking for?
1 gallon = 600 sq ft. So you will need 7 gallons to cover the whole wall
4200 ÷ 600 = 7
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