Bricks Puzzle

#213

Three workers; Tom, Dick and Harry were laying a brick wall.

Tom can lay 1000 bricks in three hours, Dick can lay 1000 bricks in two hours and Harry can lay 1000 bricks in six hours.

How long will it take Tom, Dick and Harry to lay 1000 bricks if they all work together?

  Difficulty Level - 2/5

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