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Problem 11-1 (a) Indicate whether the following linear program is an all-integer linear program or a...

Problem 11-1

(a) Indicate whether the following linear program is an all-integer linear program or a mixed-integer linear program.
Max 30x1 + 25x2
s.t.
3x1 + 1.5x2 ≤ 400
1.5x1 + 2x2 ≤ 250
1x1 + 1x2 ≤ 150
x1, x2 ≥ 0 and x2 integer
This is a mixed-integer linear program.
Write the LP Relaxation for the problem but do not attempt to solve.
If required, round your answers to one decimal place.
Its LP Relaxation is
Max x1 + x2
s.t.
x1 + 1.5x2 ≤  
1.5x1 + x2 >  
x1 + x2 ≤  
x1 , x2 ≤  0 and x1 integer
(b) Indicate whether the following linear program is an all-integer linear program or a mixed-integer linear program.
Max 3x1 + 4x2
s.t.
2x1 + 4x2 ≥ 8>
2x1 + 6x2 ≥ 12
x1, x2 ≥ 0 and integer
This is a mixed-integer  linear program.
Write the LP Relaxation for the problem but do not attempt to solve.
If required, round your answers to one decimal place.
Its LP Relaxation is
Max x1 + x2
s.t.
2x1 + x2 >  
x1 + 6x2 ≤  
x1 , x2 >  0 and x1 integer

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