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The feasible region of a system of linea...

The feasible region of a system of linear inequalities is shown shaded in the following graph . If the objective function is Z = ax + by where a,b are constants and the maximum of Z occurs at points A and D then :

A

`3a=5b `

B

` a= - (3)/(5) b`

C

`4a = 7b `

D

a = `- (4)/(7)` b

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The correct Answer is:
B
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