The objective function measures profit; it is assumed that every piece stocked will be sold.

Constraints measure display space in units, time to set up the display in minutes and two marketing restrictions.

MAX $100$N$+120$B$+150$R$+125$E

N$+2$B$+2$R$+2$E $<108$ Space

$3$N$+5$B$+$ E $<120$ Time

N$+$ R $<25$ Market Restriction $1$

B$+$R$+$ E $>50$ Market Restriction $2$

Use the output below to solve and answer the following question.

How much space will be left unused?