"Calculate the prime cost from the following information:
Direct material purchased: Rs. 1,00,000.
Direct material consumed: Rs. 90,000.
Direct labour: Rs. 60,000.
Direct expenses: Rs. 20,000.
Manufacturing overheads: Rs. 30,000."

Direct Materials Consumed 50,000 ; Direct Wages 15,000; Direct Expenses 5,000; Opening Stock of Work-in-Progress 8,000; Closing Stock of Work-in progress 5,000 *. Calculate Prime Cost if Work-in- progress is valued at prime cost.

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Purchase of raw material ghc 50000
Opening stock of raw materials ghc 4000
Closing stock of raw materials ghc 3000
Direct wages ghc 16000
Carriage inwards ghc 2000
Carriage outwards ghc 3500
Direct expenses ghc 4500
Indirect expenses ghc 6700
Salaries ghc 13400
Akosua mary and seven daughters company limited have incurred the expenditure above in their manufacturing setting. Calculate the prime cost from the information provided

Prime costs refer to total of direct costs. Why is the cost of direct material not considered?