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:
Explanation:
80% of 25 = 20
∴ Total attendance should be more than 20 and total earning should be more than 600.
There are 7 employees (2001147, 2001159, 2001170, 2001171, 2001174, 2001177 and 2001180) who have worked for more than 20 days and whose earning is more than Rs. 600.
Hence, option (d).
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