Skip to main contentSkip to solution

The maximum value of z=4x+3yz = 4x + 3y, if the feasible region for an LPP is as shown below is:Figure for CUET Mathematics 2022 4 Aug Shift 1 question 38 (Algebra)

Solution

✅ Correct Option: 2

Corners (read from graph): O(0,0)O(0,0), A(25,0)A(25,0), BB (intersection of constraint lines), C(0,24)C(0,24).

Lines through given points: through A(25,0)A(25,0) and (0,400/9)(0, 400/9): 16x+9y=40016x + 9y = 400.

Through C(0,24)C(0,24) and (48,0)(48,0): x+2y=48x + 2y = 48.

Solving: x=16x = 16, y=16y = 16, so B=(16,16)B = (16, 16).

Z(0,0)=0Z(0,0)=0, Z(25,0)=100Z(25,0)=100, Z(16,16)=112Z(16,16)=112, Z(0,24)=72Z(0,24)=72. Maximum =112= 112.

Keyboard Shortcuts

  • Left arrow: Previous question
  • Right arrow: Next question
  • S key: Jump to solution
  • Q key: Jump to question