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30 men were to finish a job in 40 days. After 25 days, 10 more men join. How many days early is the job finished?

Competition practiceTime & Work / Pipes
  • A5 days
  • B4 days
  • C3 days
  • D3 3/4 days

Step-by-Step Solution

Left: man-days for 40 men: days instead of 15. Early by .
Answer: D) 3 3/4 days

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