Time and
Work Short Tricks & Formulas

1.     M₁D₁W₂  =
M₂D₂W₁  (M-man, D-Day, W-Work).

2.     If
A can do a piece of work in x days, then

 
      A’s 1 day work = 1/x.

3.     If
A’s 1-day work = 1/x, then A can finish a piece of work in x
days.

4.     If
A is X times as good a workman as B then:

Ratio of
work done by A and B = X
: 1

Ratio of
time taken by A and B to finish a work = 1 : X.

5.If A can do a piece of work in x
days and B can do it in y days then A and B working
together will do the same work in xy/(x+y) days.

6. If A and B together can do a piece
of work in Y days and A can do it in X days then B working
alone will do the same work in xy/(x-y) days.

Time and Work:Also Read: