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# The ratio of two quantities of boxes, a and b, is 4 to 5. If each of

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Math Expert
Joined: 02 Sep 2009
Posts: 58427
The ratio of two quantities of boxes, a and b, is 4 to 5. If each of  [#permalink]

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01 Jan 2018, 10:47
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Difficulty:

35% (medium)

Question Stats:

76% (01:05) correct 24% (02:06) wrong based on 41 sessions

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The ratio of two quantities of boxes, a and b, is 4 to 5. If each of the quantities is increased, what is the new ratio?

(1) Quantities are only added 9 boxes at a time, 4 to quantity a and 5 to quantity b.
(2) Quantity b is increased by 5

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Joined: 23 Feb 2017
Posts: 58
Re: The ratio of two quantities of boxes, a and b, is 4 to 5. If each of  [#permalink]

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01 Jan 2018, 22:36
IMO Ans. A

Current a:b = 4:5

Statement 1 Quantities are only added 9 boxes at a time, 4 to quantity a and 5 to quantity b.
4:5 = 4x+4 : 5x+ 5= a':b'

a':b' = 4(x+1):5(x+1) = 4:5

The ratio will remain same.

Statement 2 Quantity b is increased by 5
as we don't know about the quantity A, not sufficient
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Intern
Joined: 28 Oct 2015
Posts: 15
Re: The ratio of two quantities of boxes, a and b, is 4 to 5. If each of  [#permalink]

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01 Jan 2018, 23:45
A is the answer .. ratio will remain same after the said increase

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Re: The ratio of two quantities of boxes, a and b, is 4 to 5. If each of   [#permalink] 01 Jan 2018, 23:45
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