Duo limited makes and sells one product, the First. The following information is available for period 3 : Fixed production overheads for the period were $52,500 and fixed administration overheads were $13,500. Required: a) Prepare as statement of profit or loss for period 3 based on the marginal costing principles. Duo limited makes and sells one product, the First. The following information is available for period 3 : Fixed production overheads for the period were $52,500 and fixed administration overheads were $13,500. Required: a) Prepare as statement of profit or loss for period 3 based on the marginal costing principles