If 9 people paint a fence in 3 hours at the same rate, how long will it take 27 people to paint the same fence?

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Multiple Choice

If 9 people paint a fence in 3 hours at the same rate, how long will it take 27 people to paint the same fence?

Explanation:
When workers all paint at the same speed, the total amount of work equals the number of workers times the time they work. So 9 people for 3 hours is 9 × 3 = 27 person-hours of work. To finish the same fence with 27 people at the same rate, you need 27 person-hours divided by 27 workers, which is 1 hour. Therefore, it takes one hour.

When workers all paint at the same speed, the total amount of work equals the number of workers times the time they work. So 9 people for 3 hours is 9 × 3 = 27 person-hours of work. To finish the same fence with 27 people at the same rate, you need 27 person-hours divided by 27 workers, which is 1 hour. Therefore, it takes one hour.

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