Final answer:
To calculate the amount of joint compound needed to cover 1,000 square feet of drywall, determine the coverage rate and use a proportion to find the answer.
Step-by-step explanation:
To calculate the amount of joint compound needed to cover 1,000 square feet of drywall, you need to determine the coverage rate of the joint compound. The coverage rate is usually specified on the packaging of the joint compound and is measured in gallons per square foot. Let's assume the coverage rate is 3 gallons per 100 square feet. To calculate the amount needed for 1,000 square feet, we can use the proportion 3 gallons / 100 square feet = x gallons / 1,000 square feet. Solving for x, we find that x = 30 gallons. Therefore, it will take 30 gallons of joint compound to cover 1,000 square feet of drywall.