# RE3 | z-ai/glm-5.2 | run 1

## Prompt

If 3 workers build a wall in 12 hours, how long would 4 workers take to build the same wall working at the same rate? Show your work.

## Response

Three workers take 12 hours to build the wall, so the job requires \(3 \times 12 = 36\) worker-hours. With 4 workers sharing that same workload, the time required is \(36 \div 4 = 9\) hours.

**Work:**

\[
\text{Total work} = 3 \text{ workers} \times 12 \text{ hours} = 36 \text{ worker-hours}
\]

\[
\text{Time with 4 workers} = \frac{36 \text{ worker-hours}}{4 \text{ workers}} = 9 \text{ hours}
\]

So, 4 workers would take **9 hours** to build the same wall.

If the workers instead worked at different rates, how would you calculate the combined completion time?
