Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 28 May 2015, 22:57

### 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
TAGS:
Senior Manager
Joined: 31 Jul 2006
Posts: 440
Followers: 3

Kudos [?]: 15 [0], given: 0

At a certain paint store "forest green" is made by mixing 4 [#permalink]  16 Sep 2006, 04:56
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.
SVP
Joined: 05 Jul 2006
Posts: 1518
Followers: 5

Kudos [?]: 119 [0], given: 39

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
Senior Manager
Joined: 31 Jul 2006
Posts: 440
Followers: 3

Kudos [?]: 15 [0], given: 0

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?
SVP
Joined: 05 Jul 2006
Posts: 1518
Followers: 5

Kudos [?]: 119 [0], given: 39

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
CEO
Joined: 21 Jan 2007
Posts: 2764
Location: New York City
Followers: 9

Kudos [?]: 355 [0], given: 4

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
Similar topics Replies Last post
Similar
Topics:
At Deluxe paint store, Fuchsia paint is made by mixing 5 parts of red 3 02 Dec 2014, 08:17
2 At Deluxe paint store, Fuchsia paint is made by mixing 2 10 Aug 2013, 01:57
18 On a certain day, orangeade was made by mixing a certain 8 24 May 2012, 22:32
7 At a certain paint store "forest green"is made by mixing 4 p 5 15 Jan 2010, 12:57
At a certain paint store, "forest green" is made by mixing 4 4 02 Nov 2005, 09:27
Display posts from previous: Sort by