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Sarah‟s seafood restaurant gets a delivery of fresh seafood every day,

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Sarah‟s seafood restaurant gets a delivery of fresh seafood every day, [#permalink] New post 01 Feb 2010, 19:01
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Question Stats:

85% (03:39) correct 15% (01:10) wrong based on 48 sessions
Sarah's seafood restaurant gets a delivery of fresh seafood every day, 7 days per week, and her delivery company charges her d dollars per delivery plus c cents per item delivered. If lst week Sarah's seafood restaurant had an average of x items per day delivered, then which of the following is the total cost, in dollars, of last week's deliveries ?

A. 7cdx/100
B. d + 7cx/100
C. 7d + xc/100
D. 7d + 7xc/100
E. 7cdx
[Reveal] Spoiler: OA

Last edited by Bunuel on 28 Dec 2014, 04:29, edited 1 time in total.
Renamed the topic, edited the question and added the OA.
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Re: Sarah‟s seafood restaurant gets a delivery of fresh seafood every day, [#permalink] New post 01 Feb 2010, 20:43
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Straightforwar "D"

7d + (c/100)*7x

What is unclear_?
Manager
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Re: Sarah‟s seafood restaurant gets a delivery of fresh seafood every day, [#permalink] New post 02 Feb 2010, 09:27
Well, i would say "D" as well.

$= 7 Days *d + Average Items * c * 7 days; cents need to be written in "/100"

--> $= 7*d + (XC*7)/100

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Re: Sarah‟s seafood restaurant gets a delivery of fresh seafood every day, [#permalink] New post 02 Feb 2010, 10:27
LM wrote:
Straightforwar "D"

7d + (c/100)*7x

What is unclear_?


yea quite an easy question.

Letme elaborate


Total delivery charges per delivery = d* number of days = 7d

total delivery charges per item = c/100

total number of items per day = x
total number of items for the week = 7x

so total delivery charges (for per item condition) = 7xc/100

so total charges = 7d+ 7xc/100
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Re: Sarah‟s seafood restaurant gets a delivery of fresh seafood every day, [#permalink] New post 02 Feb 2010, 20:16
Okay, thanks gurpreetsingh. I wasn't sure the purpose of c/100. I thought the decimals value was already reflected in the variable c ( as in c= .25 cents)

Thanks
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Re: Sarah‟s seafood restaurant gets a delivery of fresh seafood every day, [#permalink] New post 04 Feb 2010, 15:59
Answer is D. Straightforward question.
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Re: Sarah‟s seafood restaurant gets a delivery of fresh seafood every day, [#permalink] New post 27 Dec 2014, 03:53
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Re: Sarah‟s seafood restaurant gets a delivery of fresh seafood every day, [#permalink] New post 27 Dec 2014, 10:32
Expert's post
Hi All,

While I agree that this question is relatively straight-forward, whenever Test Takers see a drop in scores on Test Day, the reason is almost always SILLY/LITTLE MISTAKES. As such, it's important to be sure that you have the correct answer to a question that you "think" is easy/straight-forward/gettable. This question can be solved by TESTing VALUES.

We're told to calculate the cost of 7 days of deliveries.

On each day, there's a cost for the delivery itself (D DOLLARS) and a cost per item delivered (C CENTS/item). Note the difference in UNITS. During the week, we're told that an average of X items are delivered each DAY.

Let's TEST VALUES:
D = 2
C = 3
X = 10

So, per day, the Total Cost = 2 dollars + 3 cents(10 items) = $2.30 per day

For 7 days, that's 7($2.30) = $16.10

Now, we just have to check the answers and find the match IN DOLLARS...
Answer A = 7(3)(2)(10)/100 = 420/100 = 4.2 dollars. NOT a match

Answer B = 2 + 7(10(3)/100 = 2 + 210/100 = 4.1 dollars. NOT a match

Answer C = 7(2) + 10(3)/100 = 14.3 dollars. NOT a match

Answer D = 7(2) + 7(10)(3)/100 = 16.1 dollars. This IS a MATCH

Asnwer E = 7(3)(2)(10) = 420 dollars. NOT a match

Final Answer:
[Reveal] Spoiler:
D


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Re: Sarah‟s seafood restaurant gets a delivery of fresh seafood every day,   [#permalink] 27 Dec 2014, 10:32
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