Pj Problems - Overview
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Triadic Unit Mesh
States Of Matter
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The Human-Body Systems
Faith, Love, Charity
A publisher finds that the cost of preparing a book for printing and of making the plates is $5000. Each set of 1000 printed copies costs $1000. He can sell the books at $5 per copy. How many copies must he sell to at least recover his costs?
S7P5A51 (Physical Change).
Pj Problem of Interest is of type change. Problems of profit, loss and growth are change problems. A break-even problem is a case where cost equals revenue (zero profit-zero loss). So, it can be viewed as of type equilibrium problems (in essence a no-change state). However, it is better to align it with the concept of profit, loss and growth of the marketplace. Where profit and growth are positive changes and a loss is a negative change.
Let x be the number of copies the publisher must sell to at least recover its cost;
Then cost of publishing x copies = 5000 + x
Revenue from sales of x copies = 5x.
So, to at least recover his cost:
5000 + x = 5x
So, publisher must sell, x = 1250 copies.
The point . is a mathematical abstraction. It has negligible size and a great sense of position. Consequently, it is front and center in abstract existential reasoning.
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