CAT 2002 — DILR Question 13

Earnings per day = $\frac{\mathrm{Total} \mathrm{Earnings} \mathrm{for} \mathrm{complex} \mathrm{work}}{\mathrm{Number} \mathrm{of} \mathrm{days} \mathrm{for} \mathrm{complex} \mathrm{work}}$

Hence, we have:

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Employees numbered 2001159, 2001162, 2001165 and 2001170 have earned more than Rs. 50 per day in complex operation.

∴ Number of employees = 4

Hence, option (a).