(a) A worker completes a job in a certain number of hours. The standard time allowed for the job is 12 hours and the hourly rate of wages is
Rs. 5 per hour. The worker earns, at the rate of 50%, a bonus of Rs.
7.5 under Halsey Plan.

Ascertain the total earnings of the worker under Rowan Premium
Plan. Also calculate the effective rate of earning per hour.

(b) Calculate Machine Hour Rate from the following:

Cost of Machine Rs. 1,30,000

Installation Charges Rs 20,000

WorkingLife 10 years

Working Hours 1,500 per year

Repairing Charges 40% of Depreciation

Power 10 units per hour @ Rs. 0.10 per unit

Lubricating oil Rs. 6 per day of 8 hours.

Consumable store Rs. 10 per day of 8 hours

Wages of Operator Rs. 4 per day.

Machine Insurance 40% of Depreciation.

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