It is currently 13 Dec 2017, 05:21

Decision(s) Day!:

CHAT Rooms | Ross R1 | Kellogg R1 | Darden R1 | Tepper R1

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

At a certain paint store "forest green" is made by mixing 4

Author Message
Senior Manager
Joined: 31 Jul 2006
Posts: 440

Kudos [?]: 56 [0], given: 0

At a certain paint store "forest green" is made by mixing 4 [#permalink]

Show Tags

16 Sep 2006, 04:56
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

At a certain paint store "forest green" is made by mixing 4 parts blue paint with 3 parts yellow paint. "Verdant green" is made by mixing 4 parts yellow paint with 3 parts blue paint. How many liters of yellow paint must be added to 14 liters of "forest green" to change it to "verdant green"?

A. 2
B. 13/6
C. 3
D. 4
E. 14/3

so FG=4/7 + 3/7=14 and VG=3/4+4/7=1

but I don't know where to take it from there.

Kudos [?]: 56 [0], given: 0

Retired Moderator
Joined: 05 Jul 2006
Posts: 1748

Kudos [?]: 447 [0], given: 49

Show Tags

16 Sep 2006, 05:10
At a certain paint store "forest green" is made by mixing 4 parts blue paint with 3 parts yellow paint. "Verdant green" is made by mixing 4 parts yellow paint with 3 parts blue paint. How many liters of yellow paint must be added to 14 liters of "forest green" to change it to "verdant green"?

A. 2
B. 13/6
C. 3
D. 4
E. 14/3

14 liters forest green are = 8 blue liters + 6 yellow with a ratio of 4b:3y

we need to change the ratio to 3b:4y but still we are anly allowed to increase the yellow color while keeping the 8 liters of blue unchanged

if the 8b represents the 3 thus 10 2/3y represents the 4 , we already have 6 liters of yellow
thus we need 10 2/3 - 6 = 4 2/3 = 14/3 E IS MY ANSWER

Kudos [?]: 447 [0], given: 49

Senior Manager
Joined: 31 Jul 2006
Posts: 440

Kudos [?]: 56 [0], given: 0

Show Tags

16 Sep 2006, 05:13
yezz wrote:
At a certain paint store "forest green" is made by mixing 4 parts blue paint with 3 parts yellow paint. "Verdant green" is made by mixing 4 parts yellow paint with 3 parts blue paint. How many liters of yellow paint must be added to 14 liters of "forest green" to change it to "verdant green"?

A. 2
B. 13/6
C. 3
D. 4
E. 14/3

14 liters forest green are = 8 blue liters + 6 yellow with a ratio of 4b:3y

we need to change the ratio to 3b:4y but still we are anly allowed to increase the yellow color while keeping the 8 liters of blue unchanged

if the 8b represents the 3 thus 10 2/3y represents the 4 , we already have 6 liters of yellow
thus we need 10 2/3 - 6 = 4 2/3 = 14/3 E IS MY ANSWER

yezz, could you explan how you have arrived at 10 2/3?

Kudos [?]: 56 [0], given: 0

Retired Moderator
Joined: 05 Jul 2006
Posts: 1748

Kudos [?]: 447 [0], given: 49

Show Tags

16 Sep 2006, 05:28
In the new mix with the ratio of (3b:4y)

Blue is unchanged

b/y = 3/4 lets assume that ratio between b and y was originally (3x/4x) "in terms of values "and when we simplified by taking out common factors ( x) the ratio remaind.

b = 8 = 3x , y = 4x??

8 thus = 3x therfore x = 8/3

thus y = 4x = 4(8/3) = 32/3 = 10 2/3 this represents y total liters in the new mix so what we added to the already existing 6 liters is

10 2/3 - 6 = 4 2/3

Hope it is clearer now

Kudos [?]: 447 [0], given: 49

CEO
Joined: 21 Jan 2007
Posts: 2734

Kudos [?]: 1089 [0], given: 4

Location: New York City

Show Tags

30 Nov 2007, 10:18
once we calculate 8 litres of blue paint in FG, we can useit to calculate the amount of blue paint in VG.

the ratio of B:Y in VG is 3:4

8=3x
x=8/3
this is the multiple of the ratio

now can can calculate the hard value of Y in VG

4x = 4(8/3)

Yellow in VG - Yellow ni FG = yellow added

Kudos [?]: 1089 [0], given: 4

30 Nov 2007, 10:18
Display posts from previous: Sort by

At a certain paint store "forest green" is made by mixing 4

Moderator: chetan2u

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.