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A contractor employs 30 workers to finish in 45 days. After 15 days only one-fourth is done. How many more workers must he hire to finish on time?

Competition practiceTime & Work / Pipes
  • A30 workers
  • B20 workers
  • C10 workers
  • D15 workers

Step-by-Step Solution

worker-days = , so the job is 1800. Left 1350 in 30 days: 45 workers. Hire 15.
Answer: D) 15 workers

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