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A factory manufactures two types of scre...

A factory manufactures two types of screws, A and B. Each type of screw requires the use of two machines, an automatic and a hand operated. It takes 4 minutes on the automatic and 6 minutes on hand operated machines to manufacture a package of screws A, while it takes 6 minutes on automatic and 3 minutes on the hand operated machines to manufacture a package of screws B. Each machine is available for at the most 4 hours on any day. The manufacturer can sell a package of screws A at a profit of 70 paise and screws B at a profit of Rs 1. Assuming that he can sell all the screws he manufactures, how many packages of each type should the factory owner produce in a day in order to maximise his profit? Formulate the above LPP and solve it graphically and determine the maximum profit.

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The correct Answer is:
30 packages of screw 'A' and 20 packages of screw 'B'; Rs. 41.
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MODERN PUBLICATION-PROBABILITY-MOCK TEST (Answer the following questions)
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  2. Find: int(x^(3))/(sqrt(1-x^(8)))dx.

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  3. int1/(sqrt(5-4x-2x^2))dx

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  4. Find the integrating factor of xlogx(dy)/(dx)+y=2-logx.

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  7. Find (dy)/(dx), when: (cosx)^(y)=(cosy)^(x)

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  8. Find the equation of the tangent to the curve x^(2) + 3y = 3, which is...

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  9. Prove that: [vec(a)" "vec(b)" "vec( c )+vec(d)]=[vec(a)" "vec(b)" "vec...

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  13. Let f: W to W be defined by: f(n)={{:(n-1",","if n is odd"),(n+1",","i...

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  14. Differentiate sin^(-1)((2^(x+1))/(1+4^(x))) w.r.t. x.

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  15. If y={"log"(x+sqrt(x^2+1))}^2,"s h o wt h a t"(1+x^2)(d^2y)/(dx^2)+x(...

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  16. Find the general solution of the differential equation: cos^(2)x(dy)/(...

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  17. Evaluate the definite integrals int0pi/2(cos^2x dx)/(cos^2x+4sin^2x...

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  18. Bag I contains 3 red and 4 black balls and Bag II contains 4 red an...

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  19. three numbers are selected at random (without replacement) from first ...

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  20. A factory manufactures two types of screws, A and B. Each type of scre...

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