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# If the ratio of y to x is equal to 3 and the sum of y and x is 80, wha

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VP
Status: Preparing for the GMAT
Joined: 02 Nov 2016
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Location: Pakistan
GPA: 3.4
If the ratio of y to x is equal to 3 and the sum of y and x is 80, wha [#permalink]

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06 Sep 2017, 10:44
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15% (low)

Question Stats:

81% (00:34) correct 19% (00:17) wrong based on 31 sessions

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If the ratio of y to x is equal to 3 and the sum of y and x is 80, what is the value of y?

(A) –10 (B) –2 (C) 5 (D) 20 (E) 60
[Reveal] Spoiler: OA

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Kudos [?]: 1039 [0], given: 534

Director
Joined: 22 May 2016
Posts: 802

Kudos [?]: 253 [0], given: 544

Re: If the ratio of y to x is equal to 3 and the sum of y and x is 80, wha [#permalink]

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06 Sep 2017, 11:00
If the ratio of y to x is equal to 3 and the sum of y and x is 80, what is the value of y?

(A) –10 (B) –2 (C) 5 (D) 20 (E) 60

The ratio of y to x is 3

$$\frac{y}{x} = \frac{3}{1}$$ , so y = 3x

Sum of y and x is 80

x + y = 80

Substitute y = 3x

x + 3x = 80
4x = 80
x = 20

Plug in x = 20
y = 3(20)
y = 60

Kudos [?]: 253 [0], given: 544

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Joined: 26 Feb 2016
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Location: India
WE: Sales (Retail)
If the ratio of y to x is equal to 3 and the sum of y and x is 80, wha [#permalink]

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06 Sep 2017, 12:13
From the question stem, we know $$\frac{y}{x} = 3 => y = 3x$$

x+y = 80
Substituting this value of y, 4x = 80 -> x = 20
Therefore y = 3x = 60(Option E)
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Kudos [?]: 592 [0], given: 16

If the ratio of y to x is equal to 3 and the sum of y and x is 80, wha   [#permalink] 06 Sep 2017, 12:13
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