Gents,
I only got to see this today while looking for some research materials. I dare say I am so VERY disappointed in you Nigerians that call yourselves Bachelor's Degree and HND holders. If you cannot solve a simple case of mathematics like this, I wonder what you can technically solve. I quite agree with the chap who said in the Western world it is not about the write answers, however he must note that if the answer is wrong the application is flawwed and for business woners this will affect process design (cost?),defective products (cost?), need for re-work (cost?), e.t.c. it is all about the NGN & $!!!!
I suggest you guys do not show your ignorance in public like the guy who gave the quadratic problems and gave the wrong solution. Cry as you may, your answer is wrong - apply an elementary tool for solving quadratic equations like the 'almighty formula': for ax^2+bx+c=0,
then x=-b+/-(SQRT(b^2+4ac)/2a)
after you have re-arranged your equation thus:0.5YQ*2+NQ-K=0 and you will find out that your given answer is very wrong.

As for the disparity between HND and BSc et al, think about this: BSc et al deal with the 'cause' while HND deals with the 'effect' aspect. The roles of both set of professionals are clearly defined and the skill-sets required to play these roles are different though complimentary. In the field of engineering, the hierachy is as follows: Scientist(BSc)-Engineer(B.Eng)-Technologist(B.Tech/HND)-Technicians(HND/OND)-Craftsman(ONG/C&G). It is the application of the role defition and delineation of each sub-set that is really the problem. Also, the structure of the curriculae of our universities and polytechnics do not address these, while the manpower in both sets of institutions are very flawed in terms of competence.For example, for you to lecture in a Polytechnic, you should have had some years of hands-on experience, while a major requirement for university positions for lecturing should be some form of proven research work that is relevant to the business environment and industries.
'Till we look deeply into the quality of lecturers, curricula, infrastructures,e.t.c. we will not be able to change this disparity as the employers of labour know the limitations faced by both institutions.
Expect more from me on this topic in future.
Igho