Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Linear Programming

Question:

If corner points of a feasible region are (0, 0), (2, 0), $\left(\frac{20}{19}, \frac{45}{19}\right)$ and (0, 3), then

(A) Maximum value of $z=5 x+3 y$ is 10
(B) Minimum value of $z=5 x+3 y$ is 0
(C) Maximum value of $z=5 x+3 y$ is $\frac{235}{19}$ and minimum value is 0
(D) Maximum value of $z=5 x+3 y$ is 10 and minimum value is 0

Choose the correct answer from the options given below:

Options:

(A) and (D) Only

(B) and (D) Only

(B) and (C) Only

(A), (B) and (D) Only

Correct Answer:

(B) and (C) Only

Explanation:

The correct answer is Option (3) - (B) and (C) Only

$Z=5x+3y$

corner points value of Z
$A(0,0)$ $Z_A=0$
$B(2,0)$ $Z_B=10$
$C(\frac{20}{19},\frac{45}{19})$     $Z_C=\frac{235}{19}=12.368$
$D(0,3)$ $Z_D=9$

Z minimum = 0

Z maximum = $\frac{235}{19}$

⇒ B, C correct