Word Problem: Application Of Linear Equations (Typo In Textbook?)

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Discussion Overview

The discussion revolves around the interpretation of a word problem involving linear equations related to the number of dimes and nickels in a soda machine. Participants are examining the phrasing of the problem to clarify the mathematical relationships expressed and whether there is a potential typo in the textbook.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant questions the difference between "5 times more than" and "5 more than," seeking clarification on the mathematical implications of each phrase.
  • Another participant proposes two equations based on the interpretations: d = 5 * 2n for "5 times more than" and d = 2n + 5 for "5 more than."
  • A third participant notes that using the first equation leads to a decimal result, while the second yields an exact answer, suggesting a possible typo in the original problem statement.
  • A later reply concurs with the observation that the results align with the concerns raised about the phrasing of the problem.

Areas of Agreement / Disagreement

Participants express uncertainty about the correct interpretation of the problem's wording, with some agreeing that a typo may exist, but no consensus is reached on the correct interpretation or the presence of an error.

Contextual Notes

The discussion highlights potential ambiguities in the phrasing of the problem, which may affect the formulation of equations. The reliance on specific interpretations of "5 times more than" versus "5 more than" is central to the confusion.

NotaMathPerson
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Is there a difference between the following statement

"The number of dimes is 5 times more than twice the number of nickels" and "The number of dimes is 5 more than twice number of nickels"?

The 5 times more... and the 5 more than... confuses me. Please clarify this for me. Thanks!
 
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Re: Word problem

NotaMathPerson said:
"The number of dimes is 5 times more than twice the number of nickels"

d = 5 * 2n

NotaMathPerson said:
"The number of dimes is 5 more than twice number of nickels"

d = 2n + 5
 
Re: Word problem

greg1313 said:
d = 5 * 2n
d = 2n + 5

Hello the orginal problem where I get that statement from is this

The soda machine contains $3.00 in nickels and dimes. If the number of dimes is 5 times more than twice the number of nickels, how manay coins of each type are there?

When I used d=5*2n, I get a decimal number. But when I use d = 5+2n I get an exact answer. Do yout think the problem has typo error?
 
Re: Word problem

It certainly appears that way. My results are the same as the results you described.
 

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