A worker completes a task in 6 hours, while an apprentice completes the same task in 12 hours. How many hours will it take them working together?

Answer and explanation

Correct answer: B. 4 hours

  1. Step 1: Determine the hourly work rate of each person: the worker completes of the task per hour, and the apprentice completes of the task per hour.
  2. Step 2: Calculate their combined rate per hour: of the task per hour. Working together, they will finish the task in .
Answer
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