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Algebra - PS

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by karthikpandian19 » Thu Dec 15, 2011 7:07 pm
At a certain diner, a hamburger and coleslaw cost $3.59, and a hamburger and french fries cost $4.40. If french fries cost twice as much as coleslaw, how much do french fries cost?

(A) $0.30
(B) $0.45
(C) $0.60
(D) $0.75
(E) $0.90

[spoiler]When i solve this the answer comes to F=1.62$. Can you let me know where i make mistake?[/spoiler]
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by Anurag@Gurome » Thu Dec 15, 2011 8:06 pm
karthikpandian19 wrote:At a certain diner, a hamburger and coleslaw cost $3.59, and a hamburger and french fries cost $4.40. If french fries cost twice as much as coleslaw, how much do french fries cost?

(A) $0.30
(B) $0.45
(C) $0.60
(D) $0.75
(E) $0.90

[spoiler]When i solve this the answer comes to F=1.62$. Can you let me know where i make mistake?[/spoiler]
Let a hamburger costs $x and coleslaw costs $y.
Then cost of french fries = $2y
Hence, x + y = 3.59 and x + 2y = 4.40
Subtracting the equations, we get, y = $0.81
Therefore, cost of french fries = 2 * 0.81 = [spoiler]$1.62[/spoiler]
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by neelgandham » Thu Dec 15, 2011 11:04 pm
karthikpandian19 wrote:When i solve this the answer comes to F=1.62$. Can you let me know where i make mistake?
I can recollect that this is a PS 1000 problem and the answer options mentioned here don't contain the correct answer i.e. $1.62 (as mentioned by Anurag in the previous post)
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by karthikpandian19 » Thu Dec 15, 2011 11:54 pm
@neelgandham

What does the PS1000 problem mean?

In case these kind of questions come in GMAT ? what to do ? your suggestions?
neelgandham wrote:
karthikpandian19 wrote:When i solve this the answer comes to F=1.62$. Can you let me know where i make mistake?
I can recollect that this is a PS 1000 problem and the answer options mentioned here don't contain the correct answer i.e. $1.62 (as mentioned by Anurag in the previous post)
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by ankush123251 » Fri Dec 16, 2011 12:09 am
The answer indeed is 1.62 $.Can you check back if you have posted the right options.
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by neelgandham » Fri Dec 16, 2011 2:48 am
karthikpandian19 wrote:@neelgandham
What does the PS1000 problem mean?.In case these kind of questions come in GMAT ? what to do ? your suggestions?
PS1000 is a document with a set of 1000 problem solving questions floating around in the web(Not sure of the source of the questions!)
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by amit28it » Fri Dec 16, 2011 5:54 am
Mr. Anurag had explained it well but if it explained little bit better ..
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by ArunangsuSahu » Sun Jan 01, 2012 8:48 am
The answer choices are wrong
It will be 2*0.81=1.62
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