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#1 2013-05-08 02:52:15

mom
Member
Registered: 2012-04-25
Posts: 94

Calclulating Sales

I don't know why but I am stuck on this problem. Can someone please help?
An appliance store sells a 15" TV for $250 and a 19" TV for $500. During a one-week period the store sold more 19" TVs than 15" TVs and collected $20,000. What was the total number of TV sets sold?

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#2 2013-05-08 04:21:14

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,121

Re: Calclulating Sales

hi mom

I'll say 'f' is the number of fifteen inch sold and 'n' the number of nineteens.

You also know n > f.
That still leaves a lot of possible answers. 

eg.  n = 40 and f = 0    OR n = 39 and f = 2 etc etc.

Is there more information?

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#3 2013-05-08 05:24:42

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,843

Re: Calclulating Sales

There is a total of 13 solutions at the moment.


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#4 2013-05-08 05:26:47

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,675

Re: Calclulating Sales

Hi;

How about 14 for the answer?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#5 2013-05-08 05:36:08

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,843

Re: Calclulating Sales

Yes, sorry. There 14 of them.

Last edited by anonimnystefy (2013-05-08 05:38:05)


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#6 2013-05-08 06:28:37

mom
Member
Registered: 2012-04-25
Posts: 94

Re: Calclulating Sales

Thanks everyone. I did find the answer though it was painful as I could not figure out the formula.

28 15" TV's at $250 = $14000
24 19"TV's at $500 =  $ 6000
52 total TV's           = $20000

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#7 2013-05-08 06:32:11

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,843

Re: Calclulating Sales

Hi mom (this sounds kinda weird)

Is there a part of the question you haven't posted?


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#8 2013-05-08 06:33:23

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,675

Re: Calclulating Sales

Hi;

But why do you like that answer better than this one?


6 15 inchers

37 19 inchers


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#9 2013-05-08 06:56:03

mom
Member
Registered: 2012-04-25
Posts: 94

Re: Calclulating Sales

awww I see the issue of the confusion. I did not type in the whole problem. 4 more were sold. Not just more were sold.

Sorry everyone.

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#10 2013-05-08 06:58:14

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,843

Re: Calclulating Sales

Ah, yes. With that detail the answer is unique and it is the same as your answer.


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#11 2013-05-08 06:59:25

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,675

Re: Calclulating Sales

Hi;

Yeparoo! Exact a mundo!


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

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