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A certain diet program calls for eating daily calories from [#permalink]

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15 Jan 2012, 18:01

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28% (03:24) correct
72% (01:36) wrong based on 115 sessions

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A certain diet program calls for eating daily calories from carbohydrates, proteins, and fats in the ratio of 40:30:30 respectively. On a certain day, did Bill follow this diet program? (1 gram of fat contains 9 calories, 1 gram of protein contains 4 calories, and 1 gram of carbohydrates contains 4 calories)

(1) One of the meals Bill ate contained 80 grams of carbohydrates, 60 grams of protein, and 60 grams of fat. (2) Bill ate 1500 calories during the day.

A certain diet program calls for eating daily calories from carbohydrates, proteins, and fats in the ratio of 40:30:30 respectively. On a certain day, did Bill follow this diet program? (1 gram of fat contains 9 calories, 1 gram of protein contains 4 calories, and 1 gram of carbohydrates contains 4 calories)

(1) One of the meals Bill ate contained 80 grams of carbohydrates, 60 grams of protein, and 60 grams of fat --> we have info only about one meal Bill ate. Not sufficient. Though from this statement we can find out how much calories did Bill get from this meal: 80 grams of carbohydrates = 4*80 = 320 calories; 60 grams of protein = 4*60 = 240 calories; 60 grams of fat= 9*60 = 540 calories.

(2) Bill ate 1500 calories during the day --> no info about the ratio. Not sufficient.

(1)+(2) To follow his diet Bill should have had 30%*1,500=450 calories from fat but (1) tells that Bill already exceeded this limit in one particular meal, so clearly he did not follow his diet program. Sufficient.

B is not sufficient alone becuase even if we know what is the total number of calories we don't know anything about the characteristics of carbo, protein and fat.

If we follow A then we can answer with certainty that he didn't follow his diet. We've enough data to say it with just 1st sentece.

I think that the answer should be 'A' (instead of 'C') because total calories consumed are immaterial when calculating the ratio.

is a question ambiguous? The question is asking if the guy fits the ratio. (1) Says to us that he definitely does. I don't see any restrictions strictly showing how many calories should be derived. Thus I also considered calories info irrelevant.

I think that the answer should be 'A' (instead of 'C') because total calories consumed are immaterial when calculating the ratio.

is a question ambiguous? The question is asking if the guy fits the ratio. (1) Says to us that he definitely does. I don't see any restrictions strictly showing how many calories should be derived. Thus I also considered calories info irrelevant.

Bunuel, please help

To reiterate what Bunuel mentioned in his original solution, the key is that statement 1 only gives us information on what he ate for 1 meal that day. True, that meal followed the ratio, but statement 1 is not sufficient because the original question is asking whether the person followed the ratio THAT DAY, not just for 1 meal. We do not have information on what that person ate for other meals of the day.

Statement 2 is not sufficient either because we don't know the breakdown of the 1500 calories and cannot check the ratio.

However, when we combine both statements, they basically tells us that the person only ate 1 meal that day - the meal mentioned in statement 1. This is why C is the answer (1+2 are sufficient).

Re: A certain diet program calls for eating daily calories from [#permalink]

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18 Dec 2014, 13:32

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Re: A certain diet program calls for eating daily calories from [#permalink]

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21 May 2016, 04:11

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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