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mixture fractions

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by canuckclint » Tue Nov 04, 2008 7:28 pm
Miguel is mixing up a salad dressing. Regardless of the number of servings, the recipe requires that 5/8 of the finished dressing mix be olive oil, 1/4 vinegar, and the remainder an even mixture of salt, pepper and sugar. If Miguel accidentally doubles the vinegar and forgets the sugar altogether, what proportion of the botched dressing will be olive oil?

15/29
5/8
5/16
1/2
13/27
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by vishubn » Tue Nov 04, 2008 8:12 pm
Boy boy !! I don't know if am wrong :(
I get 5/12 as the OA

but i don't see that as an option

Vishu

let x be the mix
so vinegar and olive oil together makes 7/8 of the total mix
1/8 is remaining

so 1/24 ,1/24and 1/24 is salt,pepper and sugar

so now x+1/2+1/24+1/24=1 , where x is the proportion of olive oil

solvin for x, 1-7/12=x

x=5/12
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by cramya » Tue Nov 04, 2008 8:31 pm
I think it should be 15/29.
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by cramya » Tue Nov 04, 2008 8:39 pm
Vishu,
I think when he doubles the vinegar it could be an improper fraction > 1.
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by canuckclint » Tue Nov 04, 2008 8:52 pm
Go Obama!
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by canuckclint » Tue Nov 04, 2008 8:58 pm
People it can't be improper and not 5/12 because the choices are given.

Go Obama!
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by cramya » Tue Nov 04, 2008 9:03 pm
Canuck,
I posted my solution as 15/29 . I said improper for the total mixture
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by cramya » Tue Nov 04, 2008 9:05 pm
Old:

5/8
1/4
1/24
1/24
1/24

New:

5/8
1/2
1/24
1/24
0

Total = 5/8+1/2+1/24+1/24 = 29/24 (IMPROPER FRACTION this is what i meant)

Fraction of Oilve oil = 5/8 / 29/24 = 15/29

A)
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by canuckclint » Tue Nov 04, 2008 9:08 pm
cramya wrote:Old:

5/8
1/4
1/24
1/24
1/24

New:

5/8
1/2
1/24
1/24
0

Total = 5/8+1/2+1/24+1/24 = 29/24 (IMPROPER FRACTION this is what i meant)

Fraction of Oilve oil = 5/8 / 29/24 = 15/29

A)
Looks right, OA to come in an hr.
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by vishubn » Tue Nov 04, 2008 9:30 pm
Vishu,
I think when he doubles the vinegar it could be an improper fraction > 1.

Yaa !! U r right Ramya :)

Thanks a lot !! I goofed it up

Vishu
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by cramya » Tue Nov 04, 2008 9:47 pm
Canuck,
In the future please post OA's wiht spoiler function if possible.
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by canuckclint » Tue Nov 04, 2008 10:53 pm
OA is [spoiler] 15/29[/spoiler]
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by raunekk » Wed Nov 05, 2008 3:49 am
as cramya has explanied...


it has to be A


@canuckclint

BTW: wats this " go obama" in between..

some "barracking " stuff???
:wink:

or r d elections takin a toll on you???:)
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by bjp2008 » Wed Nov 05, 2008 8:22 am
vishubn wrote:Boy boy !! I don't know if am wrong :(
I get 5/12 as the OA

but i don't see that as an option

Vishu

let x be the mix
so vinegar and olive oil together makes 7/8 of the total mix
1/8 is remaining

so 1/24 ,1/24and 1/24 is salt,pepper and sugar

so now x+1/2+1/24+1/24=1 , where x is the proportion of olive oil

solvin for x, 1-7/12=x

x=5/12
I also think this should be 15/29
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