Re: Demonstration Project Solution Desired
- To: mathgroup at smc.vnet.net
- Subject: [mg118319] Re: Demonstration Project Solution Desired
- From: Heike Gramberg <heike.gramberg at gmail.com>
- Date: Thu, 21 Apr 2011 03:12:50 -0400 (EDT)
Is this what you mean?
Manipulate[With[{paperPricePerPage = 20/500,
bindersPricePerBinder = 1,
bindingPrice = 130,
inkPricePerPage = 100/5000,
printerPrice = 500,
wholesaleDiscount = 0.7,
libraryDiscount = 0.9,
bulkDiscount = 0.9},
Module[{wholesalePrice},
nPages = Floor[nPages];
nBooks = Floor[nBooks];
wholesalePrice = profitMargin + nPages*paperPricePerPage +
bindersPricePerBinder +
inkPricePerPage + (bindingPrice + printerPrice)/nBooks;
Grid[{{"Wholesale price", NumberForm[N[wholesalePrice], {10, 2}],
"$"},
{"Library/bulk price",
NumberForm[
libraryDiscount/wholesaleDiscount*wholesalePrice, {10, 2}],
"$"},
{"Retail price",
NumberForm[wholesalePrice/wholesaleDiscount, {10, 2}], "$"}},
Alignment -> {{Right, "."}}]]],
{{nPages, 100, "Number of pages per book"}, Number},
{{nBooks, 10, "Number of books"}, Number},
{{profitMargin, 10, "Profit margin"}, Number}]
I've assumed that you also want the number of books being printed and that the profit margin is applied to the wholesale price.
Heike.
On 20 Apr 2011, at 09:30, BenT wrote:
> Say you have this problem:
>
> You want to sell a book with a $10 profit margin.
> Estimate the costs of materials:
> 1 ream = 500 sheets costing about $20);
> Plastic Coil Spiral Binder cost about $12 per dozen;
> One time cost of a binding machine of about $130;
> Ink cartridges cost about $100 per 5000 pages;
> One time Laser (b/w) Printer cost of about $500;
> Wholesale discount price should be 30% less than retail.
> (i.e. for retailers, and distributors only)
> Library discount price should be 10% less than retail.
> A bulk-order discount of 10% is available for 10 or more copies.
>
> Solve set up the problem for the user to input the (1) number of pages
> of the book, and the desired (2) profit margin; and output the (1)
> wholesale trade discount 30%, the (2) library/bulk discount of 10%,
> and finally the needed (3) retail price to make the desired profit.
>
> Can anyone solve the problem in a Demonstration Project for version 7
> or >?
>
>