Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

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

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?

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,654

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

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,797

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

The knowledge of some things as a function of age is a delta function.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 91,654

Hi;

How about 14 for the answer?

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,797

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

The knowledge of some things as a function of age is a delta function.

Offline

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

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

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,797

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

The knowledge of some things as a function of age is a delta function.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 91,654

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 agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

Offline

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

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.

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,797

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

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

The knowledge of some things as a function of age is a delta function.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 91,654

Hi;

Yeparoo! Exact a mundo!

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

Offline

Pages: **1**