Algebra-1

To find how many gallons are needed to cover 1,200 square feet based on the fact that 5 gallons cover 400 square feet, we can set up a proportion where the ratios of gallons to square feet are equal.

 

Given:

5 gallons cover 400 square feet.

We want to find x, the number of gallons needed to cover 1,200 square feet.

 

Set up the proportion:

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