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26 Aug 2003, 10:45
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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

According to me it is H+C=3.59 and H+F=4.40 =H+2C
C=.89 so F =1.68 but the answer says 0.90??????
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27 Aug 2003, 01:04
hamburger - x
coleslaw - y
french fries - 2y

x+y=3.59 => x=3.59-y
x+2y=4.40

Hence,
3.59-y+2y=4.40
y=4.40-3.59=0.81

Therefore, french fries (2y) cost $1.62 _________________ Too much is not enough... Director Status: No dream is too large, no dreamer is too small Joined: 14 Jul 2010 Posts: 649 Followers: 41 Kudos [?]: 756 [0], given: 39 Re: At a certain diner, a hamburger and coleslaw cost$3.59, and [#permalink]

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31 Dec 2011, 09:28
But the options are:

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 _________________ Collections:- PSof OG solved by GC members: http://gmatclub.com/forum/collection-ps-with-solution-from-gmatclub-110005.html DS of OG solved by GC members: http://gmatclub.com/forum/collection-ds-with-solution-from-gmatclub-110004.html 100 GMAT PREP Quantitative collection http://gmatclub.com/forum/gmat-prep-problem-collections-114358.html Collections of work/rate problems with solutions http://gmatclub.com/forum/collections-of-work-rate-problem-with-solutions-118919.html Mixture problems in a file with best solutions: http://gmatclub.com/forum/mixture-problems-with-best-and-easy-solutions-all-together-124644.html Re: At a certain diner, a hamburger and coleslaw cost$3.59, and   [#permalink] 31 Dec 2011, 09:28
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