Accounts - Principles of Accounts

JAMB 2000

Use the information below to this question
Cost of raw materials consumed 300,600
Carriage inwards 6,700
Returns of raw materials 10,800
Closing stock of raw materials 100,250
Manufacturing wages 27,000
Lighting, power, insurance and rent
relation to the factory are
apportioned 1/3,2/5, 1/6 and 17
with totals N30,000; N 75,000; N36,000 and N 56,000 respectively.

What is the cost of the opening raw materials?