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Time and Work Quantitative aptitude Important Formula

If X can do a Piece of work in k days.
Than X one day’s work is =1/k

IF P is thrice as good a workman as Q then
Ratio of work done by P and Q= 3:1

Days* One day work= Total work done by person
One day work = Total work done by person/Days

45 person do complete work 16 days total work (45*16=720)
Six days after reaming work done by 30 men’s are joined with them(total mens are 75).
Now we are find reaming day’s single person work work
This is formula
75 men do work in single day=total no of man/(total work)=75/720
If your are not understand see this Question and answer for example

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