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# A bag contains balls, of which some are red and the others are blue.

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Intern
Joined: 23 Jul 2017
Posts: 32
Location: United Arab Emirates
Concentration: Finance, Entrepreneurship
WE: Analyst (Commercial Banking)
A bag contains balls, of which some are red and the others are blue.  [#permalink]

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02 Aug 2018, 05:04
1
00:00

Difficulty:

35% (medium)

Question Stats:

75% (01:56) correct 25% (01:19) wrong based on 55 sessions

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A bag contains balls, of which some are red and the others are blue. What is the number of blue balls in the bag?

(1) If 5 red balls are taken out of the bag, the bag will contain 50% more red balls than blue balls

(2) If 5 blue balls are taken out of the bag, the bag will contain 4 red balls for every blue ball

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Manager
Joined: 23 May 2017
Posts: 231
Concentration: Finance, Accounting
WE: Programming (Energy and Utilities)
Re: A bag contains balls, of which some are red and the others are blue.  [#permalink]

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02 Aug 2018, 05:10
4
A bag contains balls, of which some are red and the others are blue. What is the number of blue balls in the bag?

(1) If 5 red balls are taken out of the bag, the bag will contain 50% more red balls than blue balls

(2) If 5 blue balls are taken out of the bag, the bag will contain 4 red balls for every blue ball

Red Ball : X & Blue Ball = Y
From statement 1 : x-5 = 1.5(y) - We can't solve for x & y

From statement 2: x = 4 (y-5) - We can't solve for x & y

1 & 2
4y - 20 - 5 = 1.5y
2.5y = 25
y = 10 & x = 20

Ans - C
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Re: A bag contains balls, of which some are red and the others are blue.  [#permalink]

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23 Nov 2019, 10:41
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Re: A bag contains balls, of which some are red and the others are blue.   [#permalink] 23 Nov 2019, 10:41
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