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#1 2013-05-09 00:52:15

mom
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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?

#2 2013-05-09 02:21:14

bob bundy
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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

#3 2013-05-09 03:24:42

anonimnystefy
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Re: Calclulating Sales

There is a total of 13 solutions at the moment.


The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#4 2013-05-09 03:26:47

bobbym
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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.

#5 2013-05-09 03:36:08

anonimnystefy
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Re: Calclulating Sales

Yes, sorry. There 14 of them.

Last edited by anonimnystefy (2013-05-09 03:38:05)


The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#6 2013-05-09 04:28:37

mom
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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

#7 2013-05-09 04:32:11

anonimnystefy
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Re: Calclulating Sales

Hi mom (this sounds kinda weird)

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


The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#8 2013-05-09 04:33:23

bobbym
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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.

#9 2013-05-09 04:56:03

mom
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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.

#10 2013-05-09 04:58:14

anonimnystefy
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Re: Calclulating Sales

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


The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#11 2013-05-09 04:59:25

bobbym
Administrator

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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.

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