1. Materials costing methods. The Meltzer Company made the following materials purchases and issues during January. Inventory: January 1. 500 units @ $1.20 Receipts: January 6. 200 10. 400 @1.25?

To calculate the cost of materials issued using the weighted average costing method, we first need to calculate the weighted average cost per unit.

Total cost of inventory on January 1: 500 units x $1.20 = $600
Total cost of materials purchased on January 6: 200 units x $1.25 = $250
Total cost of materials purchased on January 10: 400 units x $1.25 = $500

Total units available for issue: 500 + 200 + 400 = 1100 units
Total cost of materials available for issue: $600 + $250 + $500 = $1350

Weighted average cost per unit = Total cost of materials available for issue / Total units available for issue
= $1350 / 1100 = $1.2273 per unit

Now, to calculate the cost of materials issued:
Let's say the company issued 300 units of materials during January.

Cost of materials issued = 300 units x $1.2273 = $368.19

Therefore, the cost of materials issued using the weighted average costing method for January is $368.19.