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One dose of secret formula is made from

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One dose of secret formula is made from [#permalink] New post 29 Aug 2018, 11:30
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One dose of secret formula is made from \(\frac{1}{6}\)ounce of Substance X and \(\frac{2}{3}\)ounce of Substance Z. How many doses are in a 30-ounce vial of secret formula?

(A) 20
(B) 24
(C) 30
(D) 36
(E) 45
[Reveal] Spoiler: OA
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Joined: 07 Jun 2014
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GRE 1: Q167 V156
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Re: FDP [#permalink] New post 29 Aug 2018, 13:31
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It is important to keep in mind that this is not a mixture problem, as a matter of fact the substances have nothing to do with it at all.

Lets examine the mass of one 'Dose'= \(\frac{1}{6}\) oz of x + \(\frac{2}{3}\) oz of z = \(\frac{5}{6}\) oz

doses are in a 30-ounce vial = \(\frac{30}{\frac{5}{6}}= \frac{30 \times 6}{ 5}=36\)

Hence option D is correct!
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Re: FDP   [#permalink] 29 Aug 2018, 13:31
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One dose of secret formula is made from

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