Answer:
Step-by-step explanation:
We will use this notation:
x0: The space leased only for March.
x1: The space leased only for April.
x2: The space leased only for May.
x3: The space leased for March and April.
x4: The space leased for April and May.
x5: The space leased for March, April, and May.
Note that there can be up to 3 leases for March, 4 leases for April, and 3 leases for May. The LP model will be:
Minimise 65x0+65x1+65x2+100x3+100x4+135x5
s.t.
x0+x3+x5>=30000 # space leased for March is atleast 30,000 sq.ft
x1+x3+x4+x5>=20000 # space leased for April is atleast 20,000 sq.ft
x2+x4+x5>=40000 # space leased for May is atleast 40,000 sq.ft
x0,x1,x2,x3,x4,x5>=0
