Mark and Rasheed are at the bookstore buying new calculators for the semester. Mark is willing to pay $75 and Rasheed is willing
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Answer:
1) 500K + 250Q ≤ 80,000
100K+80Q≤ 30,000
K≥0
Q≥0
P= 400K + 200Q
2) zero king beds and 320 queen beds
or zero queen beds and 160 king beds
3) surplus variable
surplus variable is storage space
values of surplus variable is 14,000 cubic feet if zero queen beds and 160 king beds
value of surplus variable is 4,400 cubic feet if zero king beds and 320 queen beds.
surplus is the extra amount available after all resources have been utilized to theri maximum.
4) none of the resources will be completely used. There will be surplus of both
Explanation:
1) Implicit variables: K≥0 ; Q ≥ 0
Explicit variables:
500K + 250Q ≤ 80,000-------------------------- from investment constraint
100K+80Q≤ 30,000 ---------------------- from storage space constraint
LP: P= 400K + 200Q
2) See the attachment for profit maximization graph
3) From graph in the attachment, it can be inferred that storage space is the surplus variable since graph of that equation lies completely outside of optimal area.
Also,
if K=160 and Q=0, the inequality of investment gives
500(160) + 250(0)= 80,000
if K=0 and Q=320, the inequality of investment gives
500(0)+ 250(320) =80,000
if K=0 and Q = 320, the inequality of space gives
100(0) + 80(320)= 25,600
surplus= 30,000- 25,600= 4,400
if K=160 and Q=0, the inequality of space gives
100(160) +250(0)= 16000
surplus= 30000-16000= 14000
4) K=0 and Q=300
investment inequality gives
500(0) + 250(300) ≤ 80,000
75,000≤ 80,000
space inequality gives
100(0) + 80(300) ≤ 30,000
24,000≤ 30,000
Both space and investment are in surplus
