If 18 workers finish a job in 26 days, how many workers are needed to finish it in 12 days?

The correct answer is 39. This is an inverse proportion problem. The total amount of work is constant. If 18 workers finish a job in 26 days, the total work units are 18 workers * 26 days = 468 work units. To finish the same 468 work units in 12 days, we need to find the number of workers (x).

• The equation is x * 12 days = 468 work units.
• Solving for x: x = 468 / 12 = 39 workers.
• Options 36, 30, and 42 are incorrect calculations that do not maintain the constant total work.