The following table gives details regarding the total earnings of 15 employees and the number of days they have worked on complex, medium and simple operation in the month of June 2002. Even though the employees might have worked on an operation, they would be eligible for earnings only if they have minimum level of efficiency.
The number of employees who have earned more than Rs. 600 and having more than 80% attendance (there are 25 regular working days in June 2002; some might be coming on overtime too) is
80% of attendance comes out to 20 days.
We can see from the table that there are 7 such employees who have earned more than Rs. 600 and having more than 80% of attendance.
Hence option D.
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