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A manufacturer of electronic circuit has a stock of 200 resistors, 120 transistors and 150 capacitors and is required to produce two types of circuits A and B. Type A requires 20 resistors, 10 transistors and 10 capacitors. Type B requires 10 resistors, 20 transistors and 30 capacitors. If the profit on type A circuit is Rs. 50 and that on type B circuit is Rs. 60, identify the constraints for this LPP, if it was assumed that x circuit B of type A and y circuits of type B was produced by the manufacturer.

A. x+2y≥15x + 2y \geq 15

B. 2x+y≤202x + y \leq 20

C. x+2y≤12x + 2y \leq 12

D. x,y≤0x, y \leq 0

Choose the correct answer from the options given below

Solution

✅ Correct Option: 2

Resistor: 20x+10y≤200⇒2x+y≤2020x + 10y \leq 200 \Rightarrow 2x + y \leq 20 (B). Transistor: 10x+20y≤120⇒x+2y≤1210x + 20y \leq 120 \Rightarrow x + 2y \leq 12 (C). Capacitor: 10x+30y≤150⇒x+3y≤1510x + 30y \leq 150 \Rightarrow x + 3y \leq 15 (so A with ≥\geq is wrong). Non-negativity needs x,y≥0x, y \geq 0, so D is wrong. Hence B and C only.

Note: The NTA prompt says 'x circuit B of type A and y circuits of type B'; we have read it as x circuits of type A and y of type B.

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