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Bunuel
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Physicians often estimate the adult height c, in inches, of a female 17 Jun 2018, 04:37
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Physicians often estimate the adult height c, in inches, of a female child by using the inequalities

\(\frac{m+f-13.2}{2} \leq c \leq \frac{m+f-2.8}{2}\)

where m represents the mother's adult height and f represents the father's adult height, both measured in incehs. If Rachel is a 5-year-old girl, what is her maximum adult height that will satisfy these inequalities?

(1) Rachel's height at age 5 is 44 inches
(2) Rachel's mother's adult height is 62 inches and Rachel's father's adult height is 71 inches

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Physicians often estimate the adult height c, in inches, of a female 17 Jun 2018, 17:59
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The five year old thing does not factor at all.

Statement (1): Knowing the height of the child at five years old does nothing. No part of the inequalities require knowing the child's height. Insufficient.

Statement (2): To know the maximum adult height of the child that satisfies the inequalities, c must = (m+f-2.8)/2 (the higher of the two inequalities). Since we are now given the mother's and father's heights, we can figure out the equation. We don't ACTUALLY have to do the calculation of course, just that we can figure it out. If we do, we get c = (62+71-2.8)/2 = 65.1 inches. Statement 2 is sufficient.

So the answer is B.
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Physicians often estimate the adult height c, in inches, of a female 12 Aug 2020, 01:10
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Bunuel
Physicians often estimate the adult height c, in inches, of a female child by using the inequalities

\(\frac{m+f-13.2}{2} \leq c \leq \frac{m+f-2.8}{2}\)

where m represents the mother's adult height and f represents the father's adult height, both measured in incehs. If Rachel is a 5-year-old girl, what is her maximum adult height that will satisfy these inequalities?

(1) Rachel's height at age 5 is 44 inches
(2) Rachel's mother's adult height is 62 inches and Rachel's father's adult height is 71 inches

Answer: Option B

Please check the video for the step-by-step solution.

GMATinsight's Solution

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Physicians often estimate the adult height c, in inches, of a female 14 Apr 2024, 14:52
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Hello from the GMAT Club BumpBot!

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