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# The ratio of two quantities is 5 to 6. If each of the quantities is in

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Math Expert
Joined: 02 Sep 2009
Posts: 42338

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The ratio of two quantities is 5 to 6. If each of the quantities is in [#permalink]

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21 Aug 2016, 04:18
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The ratio of two quantities is 5 to 6. If each of the quantities is increased by 15, what is the ratio of these 2 new quantities?

A. 5:6
B. 25:27
C. 15:16
D. 20:21
E. It cannot be determined from the information given
[Reveal] Spoiler: OA

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Kudos [?]: 133160 [0], given: 12415

Math Expert
Joined: 02 Aug 2009
Posts: 5234

Kudos [?]: 5891 [1], given: 118

Re: The ratio of two quantities is 5 to 6. If each of the quantities is in [#permalink]

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21 Aug 2016, 04:30
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Expert's post
Bunuel wrote:
The ratio of two quantities is 5 to 6. If each of the quantities is increased by 15, what is the ratio of these 2 new quantities?

A. 5:6
B. 25:27
C. 15:16
D. 20:21
E. It cannot be determined from the information given

Hi,
The ratio cannot be straight way added any quantity...
5:6 means 5x:6x...
So when you add a quantity, it becomes 5x + 15 : 6x +15..
So value of x is must..

Ans E
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Absolute modulus :http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html

Kudos [?]: 5891 [1], given: 118

Senior Manager
Joined: 23 Apr 2015
Posts: 332

Kudos [?]: 116 [0], given: 36

Location: United States
WE: Engineering (Consulting)
Re: The ratio of two quantities is 5 to 6. If each of the quantities is in [#permalink]

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23 Aug 2016, 09:07
Bunuel wrote:
The ratio of two quantities is 5 to 6. If each of the quantities is increased by 15, what is the ratio of these 2 new quantities?

A. 5:6
B. 25:27
C. 15:16
D. 20:21
E. It cannot be determined from the information given

Given $$\frac{x}{y} = \frac{5}{6}$$ ; find $$\frac{(x +15)}{(y+15)}$$

Here $$x = 5$$ and $$y = 6$$ or $$x=500$$ and $$y = 600$$ can give the same ratio for $$\frac{x}{y}$$, but will give different ratio when increased by 15.
Hence E) cannot be determined.

+1 for kudos

Kudos [?]: 116 [0], given: 36

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Re: The ratio of two quantities is 5 to 6. If each of the quantities is in [#permalink]

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19 Oct 2017, 07:43
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Kudos [?]: 283 [0], given: 0

Re: The ratio of two quantities is 5 to 6. If each of the quantities is in   [#permalink] 19 Oct 2017, 07:43
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