Hi sparsh!
this is how i did it !
total number of students =30
2 never buy ! so effectively we r talking abt 28 students
12(1)= 12 books
10 buy 2 books each = 20 books
remaining 6 should buy 3 miminum
but ! one student can have maximum !
but number of books avalaible is avg=2/student
=60 books in total
12+20=32 books and remaining 28 books for 6 students
now ! 5 will get their minimum share and 1 will get the max( thats the whole point )
5(3)+1(x)=28
x=13 books
Vishu
p.s.- this question has been answered in previous post
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