Answer:
In total, 600 units have been purchased at an average price of $12.50 for a total cost of $7,500.
Step-by-step explanation:
total cost of the 600 units = $1,000 + $1,100 + $1,200 + $1,300 + $1,400 + $1,500 = $7,500
average price per chair = $7,500 / 600 = $12.50
this inventory valuation method is called the weighted average method, and it assigns the same cost regardless of when the units were purchased.