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If 5 workers can finish a task in 4 days, how many days will it take 10 workers to finish the same task?

If 5 workers can finish a task in 4 days, how many days will it take 10 workers to finish the same task?

Explanation
  • 5 workers complete the task in 4 days, meaning the total work done is 5 × 4 = 20 worker-days.

  • If 10 workers are assigned, they will complete 20 worker-days of work in 20 ÷ 10 = 2 days.