Iift 2019 Question 6
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IIFT
Let x be the number of women who decided to execute the interior and exterior decoration of the society in a week’s time
Let the efficiency of each of them be 1
Total work = 7x
Number of women who worked on first day = x
Number of women who worked on second day = x-11
Number of women who worked on third day = x-22
On similar lines, the number of women who worked on nth day = x-(n-1)11
Number of women who worked on day 12=x-121
x+x-11+x-22+........x-(n-1)11 = 7x
12x-(11+22+....121)=7x
