OT: Mathematical Conundrum II

5p = 12d So it IS a pound and a shilling.

From the teaching your grannie to suck eggs department.

New 100p = 20 X 5p 5p = a shilling, 20 shillings to the pound

Old 240d = 20 X 12d 12d = a shilling, 20 shillings to the pound

Reply to
soup
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Apart from the shilling hasn't been legal tender for nearly 45 years.

The "guinea" used in bloodstock auctions is just a way of using tradition to hide the auctioneer's 5% commission - the buyer pays "1,000 guineas" (except they don't - the actual contract is based on them paying £1,050) and the seller receives £1,000.

Reply to
Adrian

Hey all math is easy, here's an aperiodic tiling thingy so easy to follow you could do it in your sleep. "In 1981 N. G. de Bruijn proved that every Penrose tiling by thick and thin rhombs can be obtained by projecting a five-dimensional cubic structure onto a two-dimensional plane cutting through 5-dimensional space at an irrational angle." I wonder how many people in the world actually had the faintest idea what N. G. de Bruijn was talking about?

Almost certainly if Einstein aperiodic tiling was specified, Zweistein any fool can do. :)

Reply to
Albert Zweistein

12d I quite agree, but I have always(well since 1971) referred to, and have heard everyone else refer to, 5p as a shilling . Have even heard 10p referred to as two bob (but I think that may be a local thing).

I know how buying livestock for guineas works what I was getting at was NY saying a guinea was now 1 pound and five pence and I was merely pointing out that a modern shilling IS 5p

Reply to
soup

I was 8 in 1971 when decimalisation occurred. I'm sure people of my parents' and grandparents' generations referred to the coins as a shilling and a two-bob for a while afterwards, especially as older coins, stamped "One shilling" rather than "5 [New] Pence", carried on in circulation right up until the time when the "silver" coins were replaced with smaller versions. But I can't remember hearing it for ages, except in a half-humourous way (eg "I remember when a loaf of bread was only one and six"). And I think I've heard "old money" used to refer more to prices than to the coins themselves.

I may have been too subtle: I was saying that a guinea used to be defined as £1 1s but it is now defined as £1.05 (which is exactly the same thing) because the shilling no longer (officially) exists.

Reply to
NY

"Everyone else"...? I suspect that, at best, your "everyone else" is a small subset of the age group. Middle-aged people were born post- decimalisation. Few people who were working at the time of decimalisation haven't retired yet.

Will the half-century, in just over five years time, be a good enough excuse for you to give up clinging to old money, or will you continue until your deathbed...?

Reply to
Adrian

Watch out or there may be a maths problem coming to determine what pattern of tiling minimises the total length of interstitial grout in my bathroom!

Reply to
pamela

Here's an oldie that needs both maths and logic.

The vicar met the verger one evening. "Many in evensong tonight"? asked the verger? "No, only three others besides myself" replied the vicar. "And knowing your fondness for puzzles I can tell you that the product of their three ages was 2450, and the sum was equal to your age. How old were they?".

The verger thought for a moment, then said "I can't solve that!".

"OK", said the vicar, "if I tell you that I was older than any of them, does that help?".

"Oh yes", said the verger, "now I know their ages".

How old was the vicar?

Reply to
Reentrant

Your local B&Q could probably provide an answer to that. :)

Reply to
Albert Zweistein

That would be a thrupenny bit and tuppence.

Reply to
pamela

Unfortnately not. They went into null space because they closed down recently. ;-)

Reply to
pamela

Or maybe throw a few groats and ha'pence in for the tuppence? :-)

Reply to
polygonum

I'm not *that* much older than you, but I was still calling 50p "ten bob" up until about 12 years ago.

Reply to
Cursitor Doom

The "I can't solve that" implies that there are two sets of factors of 2450 which have the same sum. "I was older than any of them" implies that we are looking for three smaller factors.

Prime factors of 2450 are 5,5,2,7,7

So we need to combine these into thre non-prime factors and look at the sum of each set:

5, 10, 49 = 64 25, 2, 49 = 76 50, 7, 7 = 64 5, 5, 98 = 108

Ah, we have two factors that add up to 64.

So if the verger was 50 then 5, 10, 49 would satisfy they "I was the eldest" but 50,7,7 would not.

So ages are 5, 10, 49

Reply to
NY

Half of 10 pence is 5p not 5d. 5d is 5 *old* pennies.

Reply to
Cursitor Doom

I forgot to answer the actual question.

The vicar is 50 (older than any of the parishioners) and the verger is 64.

Reply to
NY

That would be new pence, they called it something different to avoid confusion.

Reply to
dennis

Pence is the old stuff, new pence is the new stuff. They are named differently to avoid confusion.

Reply to
dennis

So why did you state "5d" instead of "5p"?

Reply to
Cursitor Doom

Is that an admission you are confused over the difference between 5p an 5d?

Reply to
Fredxxx

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