$1000 should be allocated to department B.
Allocation rate = $0.50
Department A has square feet = 1000 square feet
Allocation to be done = $0.50*1000
= $500
Department B has square feet = 2000 square feet
Allocations to be done = $0.50*2000
= $1000
Allocation refers to the distribution of cost to the different entities or department.
To know more about allocations:
https://brainly.com/question/16666093
#SPJ4