Answer:
$6,400
Explanation:
Re-write the Question for Easier Understanding
Purchasing  Maintenance  Fabrication  Assembly
$32,000 Â Â Â Â $18,0000 Â Â Â Â $96,000 Â Â Â $62,0000
 (No of Purchase Orders)   16           4
 (Sq Foot of Space)          3,300        2,700
Find:
Amount of Purchasing Department Expense to be allocated to Assembly.
=Total Purchase Order= Fabrication (16) + Assembly (4)= 20
=Purchase Order for Assemby= 4
=Purchasing Department Expense= $32,000