Question
25 employees working 9 hours a day take 20 days to complete
a project. How many employees working for 8 hours a day are needed to complete twice the given project in 25 days if they work at 15% higher efficiency?Solution
ATQ,
Let the total work be 'W' units and the efficiency of each employee be 'E' units/hour.
Let the number of employees required be 'M'.
ATQ:
The average of 27 numbers is 20.The average of first 13 numbers is 15 and that of the last 13 numbers is 18. What will be the 27th number?
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