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Maths is not my strong point

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Maths is not my strong point

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Old 16th Mar 2005, 14:15
  #21 (permalink)  
 
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Dr4t

And missed the minus sign.

Second try: -2 +1/9 or 2.111111111 (etc)
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Old 16th Mar 2005, 14:18
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Nope.

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Old 16th Mar 2005, 14:21
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Drat and the second minus sign.

I'm rusty at this.

29 it is, as Y=3 & X =5
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Old 16th Mar 2005, 14:23
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Correct.

Which only goes to show - RTFQ!!

Last edited by BEagle; 16th Mar 2005 at 14:52.
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Old 16th Mar 2005, 14:34
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I know the value of '6X'.

Regards..SFS
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Old 16th Mar 2005, 14:38
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I get triangle, how about anyone else?
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Old 16th Mar 2005, 14:52
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Another one. I buy one type of tea (A) at £24/17/0 per cwt and blend it with another type (B) which costs £33/19/0 per cwt in the ratio 5A:3B.

To the nearest farthing, at what price per lb should I sell it in order to make a profit of 10%?

NB - for youngsters:
1 cwt = 8 stone
1 stone = 14 lb

20 shillings = 1 pound
12 pence = 1 shilling
4 farthings = 1 penny.
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Old 16th Mar 2005, 14:53
  #28 (permalink)  
adr

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To answer VFTC's (1046) question, purely hypothetically, and nothing to do with my own experience, as far removed as can be imagined from my daily activites now or at any time in the past, and as far as I know (and I don't) not connected with real-life practices and methods anywhere:

Suppose you've been asked to provide information on encapsulated (ie, internal parts embedded in resin) battery packs found with captured equipment. X-ray analysis tells of the two variants tells you that two types of cell, short and long, are used in series. Pack A contains three long and two short, and provides 12V at the terminal. Pack B contains five long and six short, and provides 24V. What voltages are the short and long cells? For a bonus pint*, what is the likely battery chemistry and why are the packs badly designed?

I'll get me coat.

adr

* Prize will be forfeited if not personally collected within two days. No cash equivalent. Not transferable. Pub may contain nuts. Freshly brewed coffee may be hot. Travel, food, accommodation and insurance not included. Your home is at risk if you do not keep up with payments. The location of the prize will be withheld for security reasons.
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Old 16th Mar 2005, 14:56
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Well, Gordon Brown just announced £3.7bn more for defence but stations are still closing and forces are still reducing so maybe he can't do maths either.
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Old 16th Mar 2005, 14:57
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Ooh Ooh i know this one

Blue!
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Old 16th Mar 2005, 15:03
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I make the answer 29. Do I get a gold star?

edit to say in my eagerness to get the answer I totally missed the second page of posts and therefore did not see the answer. Honest Sir, please dont send me to the Headmaster for a caning!
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Old 16th Mar 2005, 15:03
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BEags...sitting this one out... too many things which went over my head being only a y00f...

Off to terrorise grannies for a wee while... (off to JB that is..)
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Old 16th Mar 2005, 15:10
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adr:

Short cell 1.5v, probably alkali manganese
Long cell 3v, probably lithium manganese

Poorly designed due to non-uniform discharge characteristics.

Oggin aviator - see me after prep!
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Old 16th Mar 2005, 15:48
  #34 (permalink)  

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BEags

Depends what you mean by "to the nearest farthing".

5/6½d (five and sixpence ha'penny) a pound is the nearest to the exact answer, but realises slightly less than 10%. To the nearest farthing producing at least 10% (in fact slightly more than) you would need to charge 5/6¾d (five and sixpence three farthings) a pound.
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Old 16th Mar 2005, 16:10
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Quite right - 5s 6 3/4d per lb is the closest value to achieve a profit of 10%!

Take a gold star and an intimate session with the assistant matron in the sanitorium dispensary!!
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Old 16th Mar 2005, 16:53
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UAS pilot

Head above parapet ....

Maybe he should become a Navy Lynx pilot??


Head back down, remove tongue from cheek
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Old 16th Mar 2005, 18:03
  #37 (permalink)  

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Thankyou BEagle, that was an enjoyable 20 min with a spreadsheet

Though of course that assumes (1) you sell all the tea you blend and (2) have no other overheads, such as advertising, storage, travel time, equipment etc.



My geography teacher though we were the smartest race in the world because we continually had to do LSD and ft/in problems in our heads. Perhaps the decline in our civilization mentioned in various JB threads suggests she was (partially at least) correct.
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Old 16th Mar 2005, 18:51
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Maybe he should become a Navy Lynx pilot??
think ya mean Navy Lynx Observer...its his job to do the fuel calculations...the Pilot just does what the Aircraft Commander tells him to do.
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Old 16th Mar 2005, 20:04
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Was said UAS dude trying to answer the maths question inverted at night on STBY generator having suffered structural damage from previously repored fire with a fuel imbalance and icing while trying to compensate for PEC for the forthcoming comm out ILS without the main ADI.....then its OK if he got it wrong.

- He was possibly busy.


.
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Old 16th Mar 2005, 20:06
  #40 (permalink)  
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think ya mean Navy Lynx Observer...its his job to do the fuel calculations...the Pilot just does what the Aircraft Commander tells him to do.
Where does it say that a) the looker is always the a/c commander and b) that pilots must not think for themselves about fuel states/distances from mother?
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