During a week, a worker produced 300 units, working 48 hours, at an hourly rate of Rs. 4. The estimated standard time to produce a unit is 10 minutes. Calculate the total earnings of the worker under the Halsey premium plan.

In Program Evaluation and Review Technique (PERT), an activity's expected time is 10 days. If the optimistic time is 7 days and the pessimistic time is 15 days, what is the most likely time?

Total Productive Maintenance (TPM) is being implemented in a bank's Data Centre to maximize the availability of its core banking systems. The TPM philosophy uses Overall Equipment Effectiveness (OEE) as a key performance indicator. If a server rack, which operates for 20 hours a day (Planned Production Time), experienced 1 hour of breakdown (Downtime) and ran at 90% of its optimal speed (Performance Rate), but only 80% of the transactions processed were error-free (Quality Rate), what is the effective Availability Rate component of the OEE calculation?