Hi,
I just need a clue to what to do next for this question:
Each rectangular page of a book must contain 43.890625 cm
of printed text, and each page must have 2.5 cm margins at top and bottom, and 1.6 cm margin at each side. What is the minimum possible area of such a page?
Solution: Let
be the width and let
be the height of the page. Then the width of the printed area is given by
x-3.2 and the height of the printed area is given by
= y-5 . We note that the area of the printed text is given by
= (x-3.2)(y-5) . The problem is to find
and
to minimize xy under the condition
p= (x-3.2)(y-5) = 43.890625.
The problem I am stuck with, is finding the area in terms of x...
We aren't given another equation to isolate y, and I tried isolating for y in terms of the area which gave me
43.890625 + 5x - 16 = y
but the only possible answers all contained 43.890625 without being maniulated...
Help please!