If 3 workers complete a job in 6 hours, how long would it take 4 workers to complete the same job?

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Multiple Choice

If 3 workers complete a job in 6 hours, how long would it take 4 workers to complete the same job?

Explanation:
The amount of work to finish is fixed, and if each worker contributes at the same rate, increasing the number of workers lowers the time needed in proportion to the worker count. Three workers take 6 hours, so the total work is 3 × 6 = 18 worker-hours. With four workers, the time t must satisfy 4 × t = 18, giving t = 18 / 4 = 4.5 hours. So it would take four workers about four and a half hours to complete the same job.

The amount of work to finish is fixed, and if each worker contributes at the same rate, increasing the number of workers lowers the time needed in proportion to the worker count.

Three workers take 6 hours, so the total work is 3 × 6 = 18 worker-hours. With four workers, the time t must satisfy 4 × t = 18, giving t = 18 / 4 = 4.5 hours. So it would take four workers about four and a half hours to complete the same job.

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