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# In each of the first eleven months of 2006, sales of

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VP
Joined: 21 Jul 2006
Posts: 1495
In each of the first eleven months of 2006, sales of [#permalink]

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01 Aug 2008, 00:14
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In each of the first eleven months of 2006, sales of computers at Megabits rose between 10.0% and 12.0% compared to the same month in 2005. Did Megabits sell more computers in 2006 than it did in 2005?

(1) December was the slowest month of 2005 in terms of computer sales.

(2) Fourth quarter sales in 2006 were more than 97% of fourth quarter sales in 2005.

thanks
Director
Joined: 14 Aug 2007
Posts: 704

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01 Aug 2008, 00:36
tarek99 wrote:
In each of the first eleven months of 2006, sales of computers at Megabits rose between 10.0% and 12.0% compared to the same month in 2005. Did Megabits sell more computers in 2006 than it did in 2005?

(1) December was the slowest month of 2005 in terms of computer sales.

(2) Fourth quarter sales in 2006 were more than 97% of fourth quarter sales in 2005.

thanks

D.

Its obvious from given info that for first 11 months more computers are sold in 2006 than in 2005, question remains is what happened in december of both years.

2) seems to be suffcient to answer.

I am inclined to say that 1) also is sufficient because even if we consider that 10 computers were sold each month for the first 11 months of 2005 then in first 11 months of 2006 considering lower 10% rise, 11 "extra" computers were sold. and according to 1) it sold least number of computers in 2005 december, so even if 0 computers are sold in december 2006, still the sale is higher in 2006
VP
Joined: 21 Jul 2006
Posts: 1495

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01 Aug 2008, 01:20
Senior Manager
Joined: 06 Apr 2008
Posts: 401

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01 Aug 2008, 02:56
tarek99 wrote:
In each of the first eleven months of 2006, sales of computers at Megabits rose between 10.0% and 12.0% compared to the same month in 2005. Did Megabits sell more computers in 2006 than it did in 2005?

(1) December was the slowest month of 2005 in terms of computer sales.

(2) Fourth quarter sales in 2006 were more than 97% of fourth quarter sales in 2005.

thanks

1) is suff. since Dec was slowest so even 10% increase over first 11 months mean that anything less than least in 11 months will mean that even if there are no sales in Dec'06 number of sales are still higher
2) is suff since fourth quarter sales increase means sales increased for year

Intern
Joined: 15 Jul 2008
Posts: 44

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01 Aug 2008, 03:48
I think the ans is E because sales of computers = the number of computer x unit price. So both are insuff
Senior Manager
Joined: 16 Jul 2008
Posts: 285

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01 Aug 2008, 04:09
EDIT: what is the source of this question? It can be answered without statements A or B at all. It doesn't matter what they sold in December:

x is the average monthly sales for 2005, the total sales number for 2005 is 12x.
They sold at least 11 times 1.1x in 2006 = 12.1x, which is more than 12x.
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Intern
Joined: 15 Jul 2008
Posts: 44

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01 Aug 2008, 04:27
I think sales is different from computers, you can not know the number of computers only based on sales. So I think both are insuff.
For example:
sales 1: 50, unit price 1 : 5 >>> the number of computers is 10
sales 2 :40, unit priec 2: 2 >>> the number of computers is 20
so the sales 2 is smaller,, but the the number of computers 2 is more
Senior Manager
Joined: 16 Jul 2008
Posts: 285

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01 Aug 2008, 04:53
fiesta wrote:
I think sales is different from computers, you can not know the number of computers only based on sales. So I think both are insuff.
For example:
sales 1: 50, unit price 1 : 5 >>> the number of computers is 10
sales 2 :40, unit priec 2: 2 >>> the number of computers is 20
so the sales 2 is smaller,, but the the number of computers 2 is more

Ops.
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Intern
Joined: 24 Jul 2008
Posts: 3

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01 Aug 2008, 08:27
I think A.
1)
let d = sales in December 2005
lets take extereme assumption that sales in Dec 2006 = 0
further,
sales in 11M 2006 - sales in 11M 2006 > 0,1d*11
0,1d*11 = 1,1d
1,1d > d
sales in 2006 > sales in 2005

2)
i didnt find math way to solve this. Just guessed the following
- we sold in Dec2006 less then in Dec 2005 (up to 3%)
- if sales volume in Dec is e.g. X500 average of other month than 3% of less sales in Dec can be more of what we saved in 11M of 2006
insuff..

Does it sound stupid?
Director
Joined: 20 Sep 2006
Posts: 640

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01 Aug 2008, 11:47
I think A.
1)
let d = sales in December 2005
lets take extereme assumption that sales in Dec 2006 = 0
further,
sales in 11M 2006 - sales in 11M 2006 > 0,1d*11
0,1d*11 = 1,1d
1,1d > d
sales in 2006 > sales in 2005

2)
i didnt find math way to solve this. Just guessed the following
- we sold in Dec2006 less then in Dec 2005 (up to 3%)
- if sales volume in Dec is e.g. X500 average of other month than 3% of less sales in Dec can be more of what we saved in 11M of 2006
insuff..

Does it sound stupid?

we dont know wny thing about the number. 200% of 1 is less than 1% of 30000.
So IMO E

(2) Fourth quarter sales in 2006 were more than 97% of fourth quarter sales in 2005.

total sale increse in oct + nov + dec = 3( more than 0.97) = more than 2.91
best case scenario for oct + nov = 2(12% increase) = 2.24
req sale in dec = 2.91 - 2.24 = .67 = should be 67% of dec 05

again 67% of some number could be greater than of less than 200% of some other number
VP
Joined: 17 Jun 2008
Posts: 1328

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01 Aug 2008, 21:05
tarek99 wrote:
In each of the first eleven months of 2006, sales of computers at Megabits rose between 10.0% and 12.0% compared to the same month in 2005.Did Megabits sell more computers in 2006 than it did in 2005?

(1) December was the slowest month of 2005 in terms of computer sales.

(2) Fourth quarter sales in 2006 were more than 97% of fourth quarter sales in 2005.

thanks

I will go for A
Given conditions : for first eleven months ,sales in 2006 were more than that of 2005 by atleast 10%
question => Did Megabits sell more computers in 2006 than it did in 2005?

Here the number of computers is asked .But in both the options only the mention of sales is there we cannot get number of computers by just knowing the sales.This question is not answered by both the options.(E) is IMO answer

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Its Now Or Never

VP
Joined: 21 Jul 2006
Posts: 1495

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02 Aug 2008, 00:58
guess what guys? the OA is A
Re: DS: Average   [#permalink] 02 Aug 2008, 00:58
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