Home / Arithmetic Aptitude / Time and Work :: Important Formulas

Arithmetic 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 = \( \frac { 1 } { n }\)

2. Days from Work:

   If A's 1 day's work = \( \frac { 1 } { n }\) , 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.