Answer:
$1,263
Explanation:
                     units     $ per unit      total $
beginning inventory       10         $55        $550
first purchase            25         $60       $1,500 Â
second purchase         30         $65       $1,950
third purchase           15          $70       $1,050
total                   80        $63.125     $5,050
the price per unit using the average cost method = total cost / total units = $5,050 / 80 units = $63.125 per unit
since 20 units remained as ending inventory, the total cost of ending inventory = 20 units x $63.125 = $1,262.50 ≈ $1,263