The accounting records of Tuel Electronics show the following data.

Beginning inventory		3,590 units at	$6
Purchases		8,630 units at	$8
Sales		9,870 units at	$11

1. Calculate average Unit cost: PLEASE SHOW DETAIL

2.Determine cost of goods sold during the period under a periodic inventory system using the FIFO method, the LIFO method, and the average-cost method. PLEASE SHOW DETAIL

Thanks! :)