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Difficulty:
25%
(medium)
Question Stats:
79% (01:51) correct
21%
(01:49)
wrong
based on 214
sessions
History
Date
Time
Result
Not Attempted Yet
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 last 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) \(\frac{7cdx}{100}\)
B) \(d+\frac{7cx}{100}\)
C) \(7d+\frac{xc}{100}\)
D) \(7d+\frac{7xc}{100}\)
E) \(7cdx\)
A) \(\frac{7cdx}{100}\)
B) \(d+\frac{7cx}{100}\)
C) \(7d+\frac{xc}{100}\)
D) \(7d+\frac{7xc}{100}\)
E) \(7cdx\)
27 Dec 2014, 11:32
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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:
GMAT assassins aren't born, they're made,
Rich
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:
GMAT assassins aren't born, they're made,
Rich
