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What is the ratio of the number of cups of flour to the [#permalink]
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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.
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Originally posted by tharunv on 26 Oct 2008, 15:34.
Last edited by Bunuel on 02 Jul 2013, 01:51, edited 2 times in total.
Added the OA



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Re: DS: Ratio of number of cups of flour to sugar [#permalink]
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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]
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26 Oct 2008, 23:00
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]
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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]
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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]
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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]
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24 Aug 2009, 12:11
Tejal, You might want to reread the stmt2. 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]
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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]
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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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What is the ratio of number of cups of flour to number of [#permalink]
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23 Mar 2011, 04:47
What is the ratio of number of cups of flour to number of cups of sugar in a cake recipe? 1) The number of cups of flour required in the reciped is 250% of number of cups of sugar required. 2) 1.5 more cups of flour than cups of of sugar are required in the recipe OA is provided. Why not D. I am not clear why option (2) cannot give the ratio.



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Re: ratio of cups of flour to cups of sugar [#permalink]
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23 Mar 2011, 04:53
nikhilsrl wrote: What is the ratio of number of cups of flour to number of cups of sugar in a cake recipe? 1) The number of cups of flour required in the reciped is 250% of number of cups of sugar required. 2) 1.5 more cups of flour than cups of of sugar are required in the recipe OA is provided. Why not D. I am not clear why option (2) cannot give the ratio. Let the number of cups of flour = F Let the number of cups of sugar = S Q: What is F/S=? 1. F=2.5S F/S=2.5 Sufficient. 2. F=1.5+S Say; S=10; F=11.5 F/S = 11.5/10=1.15 S=100;F=101.5 F/S=101.5/100=1.015 Not Sufficient. Ans: "A"
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Re: ratio of cups of flour to cups of sugar [#permalink]
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23 Mar 2011, 21:23
From (1) F/C = 250 % = 250/100, so enough (the ratio can be found = 2.5) Sufficient From (2) F = C + 1.5 Ratio can't be found So not sufficient Answer  A
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Re: ratio of cups of flour to cups of sugar [#permalink]
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23 Apr 2011, 16:01
following a 'don't solve' approach, we can see that the question is focused on ratios (i.e proportions of a mixture) and needs the relationship between flour and sugar to be expressed in terms of a multiplier, fraction, percentage or two fixed values for the quantities involved. 1) sets out a relationship between the only two ingredients of the mixture, based on percentages *sufficient*. 2) sets out a relationship on a numerical value. For a proportion this won't work, as 1.5 cups to 3 cups is a very different proportion to a possible 100 cups to 101.5 *insufficient* A is your answer and hopefully without pausing to work out all the numbers you have banked yourself a minute or so extra for later in the quant section (though with your having a Q50, I'll be the one asking your advice!!)
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Re: DS: Ratio of number of cups of flour to sugar [#permalink]
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18 Jun 2011, 06:19
good question  i lalso missed 3/2 vs 3/2cup



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Re: What is the ratio of the number of cups of flour to the [#permalink]
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02 Jul 2013, 01:50
Statement 2 is F = s + 1.5? Is this correct
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Re: What is the ratio of the number of cups of flour to the [#permalink]
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02 Jul 2013, 01:55



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Re: What is the ratio of the number of cups of flour to the [#permalink]
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02 Jul 2013, 13:02
fozzzy wrote: Statement 2 is
F = s + 1.5?
Is this correct Yes. I also chose D at first but in retrospect the question is easy if you read the word problem correctly. Statement 1 says F = S multiplied by something, because it states '250% of y' of = times = * Statement 2 says F = S + 1.5 indeed, as the wording 'x more ... than y' = y + x The first statement thus gives you a ratio (sufficient), the second does not as F could equal 5.5 and S 4 cups. Or F could equal 7 and S 5.5 cups which give different ratios. thus the answer is A.



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Re: What is the ratio of the number of cups of flour to the [#permalink]
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08 Feb 2017, 05:47
Let's say 1) x = sugar 5/2x = flour 5/2:1 establishes the ratio. This is sufficient. 2) x=sugar x + 3/2 = flour x=1 and then flour could be 5/2 or x=2 and then flour could be 7/2..Since this variable, this is not sufficient. Hence the answer A.
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