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A mixture weighs 7.8 grams. It consists of ingredients X, Y, and Z in
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02 Sep 2021, 03:57
02 Sep 2021, 03:57
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A mixture weighs 7.8 grams. It consists of ingredients X, Y, and Z in the ratio 2:5:6, respectively, by weight. How many fewer grams of ingredient X than ingredient Z are in the mixture?
(A) 0.8
(B) 1.2
(C) 1.8
(D) 2.4
(E) 3.0
(A) 0.8
(B) 1.2
(C) 1.8
(D) 2.4
(E) 3.0
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Re: A mixture weighs 7.8 grams. It consists of ingredients X, Y, and Z in
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02 Sep 2021, 07:21
02 Sep 2021, 07:21
1
Carcass wrote:
A mixture weighs 7.8 grams. It consists of ingredients X, Y, and Z in the ratio 2:5:6, respectively, by weight. How many fewer grams of ingredient X than ingredient Z are in the mixture?
(A) 0.8
(B) 1.2
(C) 1.8
(D) 2.4
(E) 3.0
(A) 0.8
(B) 1.2
(C) 1.8
(D) 2.4
(E) 3.0
A mixture weighs 7.8 grams. It consists of ingredients X, Y, and Z in the ratio 2:5:6
2 + 5 + 6 = 13
So we can say that:
2/13 of the mixture is ingredient X
5/13 of the mixture is ingredient Y
6/13 of the mixture is ingredient Z
How many fewer grams of ingredient X than ingredient Z are in the mixture?
Weight of ingredient X in the mixture = 2/13 of 7.8 grams = (2/13)(7.8) = 1.2 grams
Weight of ingredient Z in the mixture = 6/13 of 7.8 grams = (6/13)(7.8) = 3.6 grams
3.6 - 1.2 = 2.4
Answer: D
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Re: A mixture weighs 7.8 grams. It consists of ingredients X, Y, and Z in
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14 Jul 2024, 16:08
14 Jul 2024, 16:08
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Thanks to another GRE Prep 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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