Purchase of raw materials in January 2010

25,000

Conversion costs (inclusive of labour) in January

20,000

Units computed in January

1,200

Units sold in January

1,000

Standard cost per unit of output

Materials

12

Conversion cost

6

18

There are no direct material variances in January. It is also found that there are no opening stocks of raw materials, work-in-progress and finished goods. How would you treat the above under back flush costing. Apply all the versions.