From the following data of a textile-factory machine room, compute an hourly machine-hour rate, assuming that the machine room will work at 90% capacity throughout the year and that a breakdown of 10% is reasonable.

There are three holidays for Deepavali and two holidays for Christmas, exclusive of Sundays. The factory works for 8 hours a day and for 4 hours on Saturdays.
Number of machines (each of same type) – 40

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Rs. Power 3,120 Light 640 Salaries to foremen 1,200 Lubricating oil 66 Repairs to machines 1,446 Depreciation 785-60 Total 7,257-60