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1994-03-26
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%OP%VS4.13 (28-Apr-92), Gerald L Fitton, R4000 5966 9904 9938
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%OP%WC1018,2262,184,1748,0,0,0,0
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%C%Stamps
%C%by Gerald L Fitton, Colin Singleton and Ivor Cook
First a mistake! I wrote that prices increased in 20p increments. As
Colin Singleton has pointed out to me, this is not so. I don't know
how I made the mistake but it was when I edited a version which said
something like "10p and 20p increments up to 77p". Colin also asks for
clarification about what I mean by 'best' pointing out that using
nothing but 1p stamps will minimise the value of the stock! As Colin
surmised, that certainly wasn't the answer I wanted.
I've also received a program in BASIC from Ivor D T Cook for UK postage
stamps. Ivor is an ex Post Master and says, "I can vouch for the
difficulties which stamp selection can create, especially when
customers are waiting at the counter"! Ivor's program uses current
stamp values and the result of his algorithm is that no more than two
stamps are used for weights up to 400g and never more than three stamps
for (almost) any weight. His program called [Postage] is on the
monthly disc.
Using his program for a typical week of our post I find that, for UK
use, I am used only the following stamp values: 6p, 19p, 25p, 29p, 36p,
38p, 41p, 50p! Further investigation of Ivor's program reveals that
all 1st and 2nd class values up to 400g can be realised with a
selection of no more than two stamps from those eight stamp values.
The 'basic solution' of Ivor is the sort of thing I had in mind and,
although I can't speak for Danny Fagandini, I suspect that such a
selection is close to the answer to his question. My 'instinct', which
was to buy 10p and 20p stamps, seems to be based on nothing more than a
wish to make the sums easy!
What we need now is a spreadsheet solution and a similar program for
overseas mail. Our two most popular overseas values are 42p and 54p
which I now make up with 36pá+á6pá=á42p and 29pá+á25pá=á54p. For now,
our next purchases of stamps will be the above eight values and I'll
make up the overseas postage 'by hand' until someone comes up with an
Archimedes solution. Does anyone feel able to help?