What is the ratio of the number of cups of flour to the

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What is the ratio of the number of cups of flour to the [#permalink]

26 Oct 2008, 15:34

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What is the ratio of the number of cups of flour to the number of cups of sugar required in a certain cake recipe?

(1) The number of cups of flour required in the recipe is 250% of the number of cups of sugar required in the recipe
(2) 1 1/2 more cups of flour than cups of sugar are required in the recipe.

I got the wrong answer and I now know the correct answer but need the rationale - could someone tell me the answer and the rationale behind the answer? Thanks. I'll post the OA later.

[Reveal] Spoiler: OA

Last edited by Bunuel on 08 Aug 2012, 06:12, edited 1 time in total.

OA added.

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Re: DS: Ratio of number of cups of flour to sugar [#permalink]

26 Oct 2008, 19:43

tharunv wrote:

What is the ratio of the number of cups of flour to the number of cups of sugar required in a certain cake recipe?
(1) The number of cups of flour required in the recipe is 250% of the number of cups of sugar required in the recipe
(2) 1 1/2 more cups of flour than cups of sugar are required in the recipe.

I got the wrong answer and I now know the correct answer but need the rationale - could someone tell me the answer and the rationale behind the answer? Thanks. I'll post the OA later.

The question is asking -- what is f/s ?

(1) f = 250%(s) = (250*s)/100 ------ f/s = 5/2 ---- sufficient
(2) f = s + s(1 1/2) = s + (3*s)/2 = (5*s)/2 ------ f/s = 5/2 ---- sufficient

answer is D ?
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Re: DS: Ratio of number of cups of flour to sugar [#permalink]

26 Oct 2008, 23:00

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amitdgr wrote:

The question is asking -- what is f/s ?

(1) f = 250%(s) = (250*s)/100 ------ f/s = 5/2 ---- sufficient
(2) f = s + s(1 1/2) = s + (3*s)/2 = (5*s)/2 ------ f/s = 5/2 ---- sufficient
answer is D ?

Answer should be A.

stmt2 says, f = s + 3/2 and hence, f/s cannot be determinded.

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Re: DS: Ratio of number of cups of flour to sugar [#permalink]

27 Oct 2008, 11:23

I made the same mistake that amitdgr made and chose D. But I see what scthakur says - sheesh these silly mistakes can cost a lot! Thanks a lot guys for the response.
OA is A.

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Re: DS: Ratio of number of cups of flour to sugar [#permalink]

27 Oct 2008, 14:44

tharunv wrote:

I made the same mistake that amitdgr made and chose D. But I see what scthakur says - sheesh these silly mistakes can cost a lot! Thanks a lot guys for the response.
OA is A.

The worst part is F/S from (1) and your misinterpreted (2) arrives at 5.2 leaving you no room for second thought. after I saw D, I thought I dinged the Q by choosing A

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Re: DS: Ratio of number of cups of flour to sugar [#permalink]

21 Aug 2009, 17:49

Quote:

f = s + s(1 1/2) = s + (3*s)/2 = (5*s)/2 ------ f/s = 5/2 ---- sufficient

Guys why is this wrong?whats the silly mistake here I am unable to understand..
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Re: DS: Ratio of number of cups of flour to sugar [#permalink]

24 Aug 2009, 12:11

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Tejal,

You might want to re-read the stmt-2. 3/2 more cups is different from 3/2 times more cups. when it says times, you can take s + s(3/2) but it's just a cup and half over s so s + 3/2.

Infact, I too got the answer wrong, thought it was D and later figured out what was wrong, with my reading!!!!
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Re: DS: Ratio of number of cups of flour to sugar [#permalink]

14 Sep 2010, 23:40

We require Cf/Cs = ?

1) Cf = 250/100 (Cs)
Cf = 5/2 Cs SUFF
2) Cf - Cs = 3/2 (Putting stmt this way removes the confusion)
Clearly NOT sufficient
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Re: DS: Ratio of number of cups of flour to sugar [#permalink]

15 Sep 2010, 21:38

Answer A clearly. B means that if one is 3 then other is 4.5; if one is 7 then other is 8.5. Ratio is different hence not suff
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Re: DS: Ratio of number of cups of flour to sugar [#permalink]

18 Jun 2011, 06:19

good question - i lalso missed 3/2 vs 3/2cup

Re: DS: Ratio of number of cups of flour to sugar [#permalink] 18 Jun 2011, 06:19

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