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# A snack mix as made by combining 5 lbs of dried sereal costi

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Manager
Joined: 11 Aug 2009
Posts: 121

Kudos [?]: 191 [0], given: 3

A snack mix as made by combining 5 lbs of dried sereal costi [#permalink]

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22 Aug 2009, 20:23
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Question Stats:

100% (01:36) correct 0% (00:00) wrong based on 4 sessions

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A snack mix as made by combining 5 lbs of dried sereal costing \$.80 a pound to peanuts that cost \$2.40 a pound. How many pounds of peanuts must be added to have a mix that cost \$1.40 a pound?

Kudos [?]: 191 [0], given: 3

Manager
Joined: 14 Aug 2009
Posts: 123

Kudos [?]: 112 [2], given: 13

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22 Aug 2009, 21:07
2
KUDOS
(5*0.8+2.4*x)/(5+x)=1.4

x=3
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Kudos me if my reply helps!

Kudos [?]: 112 [2], given: 13

Senior Manager
Status: mba here i come!
Joined: 07 Aug 2011
Posts: 261

Kudos [?]: 1226 [0], given: 48

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12 Jan 2012, 07:58
final ratio would be = 1.4-0.8 : 2.4-1.4 = 5:3

ans: 3
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press +1 Kudos to appreciate posts

Kudos [?]: 1226 [0], given: 48

Intern
Joined: 03 Jan 2013
Posts: 15

Kudos [?]: [0], given: 50

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23 Jan 2013, 09:02
I have a question as to why is there a "5 + x" in the denominator ..I understand everything else.

Kudos [?]: [0], given: 50

Intern
Joined: 25 Jul 2012
Posts: 30

Kudos [?]: 6 [0], given: 56

Location: India
GMAT Date: 08-03-2013
WE: Engineering (Computer Software)

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23 Jan 2013, 09:29
pharm wrote:
I have a question as to why is there a "5 + x" in the denominator ..I understand everything else.

Pharm "5+x" is because this is based on Weighted average concept.

Total / Sum = Average
or
Total cost / Total weight = Average Cost

Here Total weight = (Weight * Cost ) + (Weight * Cost)
Total weight = sum of weights
Which results in average cost

Kudos [?]: 6 [0], given: 56

Intern
Joined: 03 Jan 2013
Posts: 15

Kudos [?]: [0], given: 50

Re: A snack mix as made by combining 5 lbs of dried sereal costi [#permalink]

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23 Jan 2013, 10:46
Oh.. Wow a Eureka moment here! Thanks a lot!

Posted from my mobile device

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Re: A snack mix as made by combining 5 lbs of dried sereal costi   [#permalink] 23 Jan 2013, 10:46
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