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Manager
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Variable Equations [#permalink]
 01 Feb 2010, 20:01
Question Stats:
85% (01:43) correct
14% (01:37) wrong based on 5 sessions
Hey guys, the book gave a plug-in solution to this question which didn't help me actually understand this. Can you guys help describe an alternative straight-foward solution instead? Thanks
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
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Director
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Re: Variable Equations [#permalink]
01 Feb 2010, 21:43
1
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Straightforwar "D"
7d + (c/100)*7x
What is unclear_?
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Manager
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Re: Variable Equations [#permalink]
02 Feb 2010, 10:27
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
Micha
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CEO
Status: Nothing comes easy: neither do I want.
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Re: Variable Equations [#permalink]
02 Feb 2010, 11:27
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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Manager
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Re: Variable Equations [#permalink]
02 Feb 2010, 21:16
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: Variable Equations [#permalink]
04 Feb 2010, 16:59
Answer is D. Straightforward question.
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Re: Variable Equations
[#permalink]
04 Feb 2010, 16:59
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