Aptitude - Time and Work

  1. Work from Days:

    If A can do a piece of work in n days, then A's 1 day's work = 1 .
  2. Days from Work:

    If A's 1 day's work = 1 , then A can finish the work in n days.
  3. Ratio:

    If A is thrice as good a workman as B, then:

    Ratio of work done by A and B = 3 : 1.

    Ratio of times taken by A and B to finish a work = 1 : 3.

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