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A container has red, blue and green balls and the number of green ball

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Math Expert
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V
Joined: 02 Sep 2009
Posts: 61544
A container has red, blue and green balls and the number of green ball  [#permalink]

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New post 21 Jan 2020, 03:31
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

67% (01:28) correct 33% (01:32) wrong based on 30 sessions

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Manager
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S
Joined: 22 Sep 2018
Posts: 71
A container has red, blue and green balls and the number of green ball  [#permalink]

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New post 23 Jan 2020, 04:58
1
given colours red blue green , and green < 15 ,

statement 1.

r:b = 6:5. nothing about the green is said, not sufficient .

Statement 2.

G = 2 R , from this we can say r:g = 1:2 , let green be 2*x and red be x ,

2*x < 15. for this to be integer , there are many possibilities for x now .

Combining:-

R:B:G = 6:5:12 , from this

G= 12X < 15. for this to be integer x has only one value Ie x = 1 .

so number of green balls = 12, SUffICIENT

OPTION C.
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Re: A container has red, blue and green balls and the number of green ball  [#permalink]

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New post 25 Jan 2020, 06:37
Red, Blue, Green < 15

Question: What is G?

1)
Red:Blue = 6:5 or 5R = 6B

insufficient; no relation to Green

2)

G/2 = R

insufficient; since many possibilities are possible: 2 = G, 1 = R, x = B ...

1&2)

5R = 6B <=> R = (6/5)*B = G/2

If B is 5, R becomes 6 and G becomes 12. If B is 10, R becomes 12, and G is 24, but since G < 15 it is not within the solution.
Therefore only one solution exist and 1&2) is SUFFICIENT
GMAT Club Bot
Re: A container has red, blue and green balls and the number of green ball   [#permalink] 25 Jan 2020, 06:37
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A container has red, blue and green balls and the number of green ball

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