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Senior Manager  B
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The ratio of red balls to green balls is 4:3. Three green balls need  [#permalink]

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Difficulty:   5% (low)

Question Stats: 86% (01:09) correct 14% (01:23) wrong based on 50 sessions

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The ratio of red balls to green balls is 4:3. Three green balls need to be added in order for there to be the same number of green balls and red balls. How many red balls are there?

A. 3
B. 4
C. 8
D. 12
E. 24

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Originally posted by Baten80 on 31 Oct 2018, 23:49.
Last edited by Bunuel on 01 Nov 2018, 00:25, edited 1 time in total.
Renamed the topic and edited the question.
Senior PS Moderator D
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GMAT 1: 740 Q50 V40 GMAT 2: 770 Q51 V42 Re: The ratio of red balls to green balls is 4:3. Three green balls need  [#permalink]

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1
1
Let the red balls be 4x and green be 3x.
Questions says : When three green balls are added to existing green balls the number for total green and red balls becomes equal.
3x + 3= 4x

Hence,
x=3

Original red balls were 4x hence 12.

Option (D) is our choice.

Best,

Baten80 wrote:
The ratio of red balls to green balls is 4:3. Three green balls need to be added in order for there to be the same number of green balls and red balls. How many red balls are there?

3

4

8

12

24

_________________
Regards,

“Do. Or do not. There is no try.” - Yoda (The Empire Strikes Back)
Senior Manager  V
Joined: 22 Feb 2018
Posts: 428
Re: The ratio of red balls to green balls is 4:3. Three green balls need  [#permalink]

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1
OA:D

Initial $$\frac{Red \quad Balls}{Green \quad Balls}=\frac{4x}{3x}$$

After adding $$3$$ Green balls,$$\frac{Red \quad Balls}{Green \quad Balls}=\frac{4x}{3x+3}=1$$

$$4x=3x+3$$

$$x=3$$

Number of Red balls $$= 4x = 4*3=12$$
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Target Test Prep Representative D
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Re: The ratio of red balls to green balls is 4:3. Three green balls need  [#permalink]

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Baten80 wrote:
The ratio of red balls to green balls is 4:3. Three green balls need to be added in order for there to be the same number of green balls and red balls. How many red balls are there?

A. 3
B. 4
C. 8
D. 12
E. 24

We can let the number of red balls and green balls be 4x and 3x, respectively. Thus, we can create the equation:

3x + 3 = 4x

3 = x

Therefore, there are 4(3) = 12 red balls.

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Re: The ratio of red balls to green balls is 4:3. Three green balls need  [#permalink]

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Baten80 wrote:
The ratio of red balls to green balls is 4:3. Three green balls need to be added in order for there to be the same number of green balls and red balls. How many red balls are there?

A. 3
B. 4
C. 8
D. 12
E. 24

Red Green
4X 3X

Now 4x=3x+3
x=3

Total Red Balls= 4*3= 12
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I never gave up what I wanted- Re: The ratio of red balls to green balls is 4:3. Three green balls need   [#permalink] 21 May 2019, 19:42
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