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At a certain diner, a hamburger and coleslaw cost $3.59, and

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Manager
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At a certain diner, a hamburger and coleslaw cost $3.59, and [#permalink] New post 26 Aug 2003, 09:45
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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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 [#permalink] New post 27 Aug 2003, 00:04
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
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Re: At a certain diner, a hamburger and coleslaw cost $3.59, and [#permalink] New post 31 Dec 2011, 08:28
I also answered 1.62
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
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Re: At a certain diner, a hamburger and coleslaw cost $3.59, and   [#permalink] 31 Dec 2011, 08:28
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