Two workers produce 120 units in 6 hours. What is their combined production rate in units per hour?

Two workers produce 120 units in 6 hours. What is their combined production rate in units per hour?

• A. 12
• B. 20
• C. 24
• D. 30

Answer: (B)

Combined production rate comes from total output divided by total time, because when workers team up, their rates add together. Here, 120 units are produced in 6 hours. So the two workers together produce 120 ÷ 6 = 20 units per hour. That means they generate 20 units each hour on average. If you wanted each person’s rate separately, you’d divide by the number of workers, giving 10 units per hour per person, but the question asks for the combined rate. A quick check: 6 hours × 20 units per hour = 120 units, which matches the given total.

Combined production rate comes from total output divided by total time, because when workers team up, their rates add together.

Here, 120 units are produced in 6 hours. So the two workers together produce 120 ÷ 6 = 20 units per hour.

That means they generate 20 units each hour on average. If you wanted each person’s rate separately, you’d divide by the number of workers, giving 10 units per hour per person, but the question asks for the combined rate.

A quick check: 6 hours × 20 units per hour = 120 units, which matches the given total.