Wednesday, January 25, 2012

Time and Work

In this post, we shall discuss about the Time and Work. Lets start with some basic formulas.


Work = Strength X Time
 =>   Strength X Time = Work
=>   (Strength X Time ) / Work = 1   :)

So, For every Case  
(Strenth X Time) / Work = 1      [ No matter the values]

So, (SxT)/W will be same for all the cases.

 I mean   st/w  =  ST/W

Keep this point in your mind. 

Now lets see some more important formulas 

  • If Days are Given :

    • If A can do some work in n days, then he can do 1/n work in One day

  • If Work is Given :

    • If A can do 1/n work in One day, he can finish it in n days 

  • If A is TWICE as good a work man as B, then 

    • The ratio of work done by A and B = 2:1
    • The ratio of time taken by A and B to finish the work = 1:2 (Please Dont be confused)
Now lets do some problems on Time and Work >>                            

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