A variable that has no physical meaning and is used to obtain an initial basic feasible solution to a linear programming problem is known as:

A feasible solution to the linear programming problem should

A

Satisfy the problem constraints

B

Optimise the objective function

C

Satisfy the problem constraints and non-negativity restrictions

D

Satisfy the non-negativity restrictions

100 kg of solution A is mixed with 60 kg of solution B . If solution A has tin and copper in the ratio 1: 4 and solution B has lead and tin in the ratio 3 :2 then what is the amount of tin in the new solution?

A

70 kg

B

36 kg

C

44 kg

D

56 kg

Solution X contains 7% (by weight) of liquid M and solution Y contains 14.5% (by weight) of liquid M. If 3 grams of solution X is mixed with 2 grams of solution Y, then liquid M accounts for what percent of the weight of the resulting solution?

A

6.09%

B

10%

C

10.75%

D

21.5%

Solution X is 10% percent alcohol by volume, and solution Y is 30 percent alcohol by volume. How many milliliters of solution Y must be added to 200 milliliters of solution X to create a solution that is 25 percent alcohol by volume?

A

600

B

800

C

300

D

250

E

None of these

In transportation model of O R once an initial solution has been found, the next step is to test that solution for optimality. The methods widely used for testing the solution are:

A

Stepping Stone Method

B

Modified Distribution Method

C

Both of the above

D

Slack variable method

E

None of the above

The word 'linear' in linear programming is used to describe:

A

relationship among two or more variables in a straight line

B

relationship among two or more variable which are directly proportional

C

relationship among two or more variables is linear

D

all of the above

E

None of the above

A constraint that does not, affect the feasible solution region is known as

A

redundant constraint

B

unbounded solution

C

slack variable

D

surplus variable

E

None of the above

A research problem is feasible only when it is

A

It is researchable

B

It is new and adds something to knowledge

C

It has utility and relevance

D

All of these

A research problem is feasible only when :

A

It has utility and relevance

B

It is researchable

C

It is new and adds something to knowledge

D

All of the above

A research problem is not feasible only when :

A

It is researchable

B

It is new and adds something to knowledge

C

It consists of independent and dependent variables

D

It has utility and relevance

A variable that has no physical meaning and is used to obtain an initial basic feasible solution to a linear programming problem is known as:

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