Stock of materials as on 1 April 2011 Stock of materials as on 31 March 2012 9,600 14,000 the year ended 31 March 2012. The following particulars have been extracted from the books of JK Production Co. Ltd, for $ 47,000 45,000 Materials purchased 2,08,000 Drawing office salaries Counting house salaries Carriage inwards 8,200 Carriage outwards 5,100 Donations to relief fund 4,300 Sales 4,87,000 Bad debts written off 4,700 Repairs of plant, machinery and tools 8,600 Rent, rates, taxes and insurance (factory) 3,000 Rent, rates, taxes and insurance (office) 1,000 Travelling expenses 3,700 Travelling salaries and commission 7,800 Production wages 1,45,000 Depreciation written off on machinery, plant and tools 9,100 Depreciation written off on office furniture 600 Director's fees 6,000 Gas and water charges (factory) 1,000 Gas and water charges (office) 300 General charges 5,000 Manager's salary 18,000 Out of 48 working hours in a week, the time devoted by the manager to the factory and office was on an average 30 hours and 18 hours, respectively, throughout the accounting year. Prepare a cost sheet showing different elements of cost