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Peter went to the store to buy paint. Small cans cost $30

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Peter went to the store to buy paint. Small cans cost $30 [#permalink]

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New post 19 Dec 2013, 11:03
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59% (02:05) correct 41% (00:54) wrong based on 213 sessions

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Peter went to the store to buy paint. Small cans cost $30 and larger cans cost $80. How many small cans of paint did he buy?
Statement #1: Peter spent $220 on paint.
Statement #2: Peter bought four cans of paint in total.


Some problems on the GMAT Quant section cannot be solved with formulas or with algebra. For some problems, the GMAT makes you wrestle with the number properties themselves. For a discussion of difficult numerical reasoning questions, as well as the full solution to this question, see:
http://magoosh.com/gmat/2013/difficult- ... questions/

Mike :-)
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Re: Peter went to the store to buy paint. Small cans cost $30 [#permalink]

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New post 23 Dec 2013, 15:45
Not really a 700 question but nevertheless an interesting one:

Choice A: If you buy one can at 80, than there are no way to reach the $220. If you buy zero also. And if you buy three than you are already at 240. Than you need two cans at $80 and two at $30. CORRECT

Choice B: no clear information

ANSWER A.

Hope it helps!
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Re: Peter went to the store to buy paint. Small cans cost $30 [#permalink]

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New post 07 Jan 2014, 10:09
mikemcgarry wrote:
Peter went to the store to buy paint. Small cans cost $30 and larger cans cost $80. How many small cans of paint did he buy?
Statement #1: Peter spent $220 on paint.
Statement #2: Peter bought four cans of paint in total.


Some problems on the GMAT Quant section cannot be solved with formulas or with algebra. For some problems, the GMAT makes you wrestle with the number properties themselves. For a discussion of difficult numerical reasoning questions, as well as the full solution to this question, see:
http://magoosh.com/gmat/2013/difficult- ... questions/

Mike :-)


Not really a 700 question.
Not really a Number Property question, this should be tagged as a Word Problem

Integer constraints are commonly tested on the GMAT

This problem is meant to deal with exactly that

I suggest always simplifying first

3x + 8y = 22

And then x = 22 - 8y / 3

Only 2 works here

Cheers!
J :)
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Re: Peter went to the store to buy paint. Small cans cost $30 [#permalink]

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New post 07 Jan 2014, 11:13
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jlgdr wrote:
Not really a 700 question.
Not really a Number Property question, this should be tagged as a Word Problem

Integer constraints are commonly tested on the GMAT

This problem is meant to deal with exactly that

I suggest always simplifying first

3x + 8y = 22

And then x = 22 - 8y / 3

Only 2 works here

Cheers!
J :)

Dear jlgdr,
By your statement "Only 2 works here", do you mean statement #2? In other words, do you mean to imply that (B) is the answer? If not, it's not clear to me what you think the answer is. Furthermore, I would argue that introducing algebra into this problem doesn't necessarily facilitate the solution, and for some students, may confuse them.
Mike :-)
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Peter went to the store to buy paint. Small cans cost $30 and larger [#permalink]

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New post 19 Apr 2017, 18:56
Peter went to the store to buy paint. Small cans cost $30 and larger cans cost $80. How many small cans of paint did he buy?

Statement #1: Peter spent $220 on paint.

Statement #2: Peter bought four cans of paint in total.
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Re: Peter went to the store to buy paint. Small cans cost $30 and larger [#permalink]

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New post 19 Apr 2017, 19:42
anupam87 wrote:
Peter went to the store to buy paint. Small cans cost $30 and larger cans cost $80. How many small cans of paint did he buy?

Statement #1: Peter spent $220 on paint.

Statement #2: Peter bought four cans of paint in total.


Hi

Firstly I am sure this Q must have been discussed earlier too.

Let's see the statements..
I. It gives us equation 30s+80b=220...
ONLY possibility is s=b=2
Sufficient

II. 4 cans can be any combination..
All 4 big. All 4 small. 1&3 etc
Insufficient

A
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Re: Peter went to the store to buy paint. Small cans cost $30 and larger [#permalink]

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New post 19 Apr 2017, 19:57
(A)
Statement 1 - total spending 220$
We know that number of cans will be a natural number.
Let x be number of small cans and y be number of large cans
If y=1 then 30x=140 => no solution
If y=2 then 30x=60=> x=2
Then y cannot be 3 otherwise sum will be greater than 220.
Statement 1 is sufficient.

Statement 2 : Total 4 cans
Possible cases
(0,4)
(1,3)
(2,2)
(3,1)
(4,0)

Only statement 1 is sufficient
(A)
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Re: Peter went to the store to buy paint. Small cans cost $30 [#permalink]

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New post 19 Apr 2017, 21:16
anupam87 wrote:
Peter went to the store to buy paint. Small cans cost $30 and larger cans cost $80. How many small cans of paint did he buy?

Statement #1: Peter spent $220 on paint.

Statement #2: Peter bought four cans of paint in total.


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Re: Peter went to the store to buy paint. Small cans cost $30   [#permalink] 19 Apr 2017, 21:16
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