Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 26 May 2017, 03:58

TODAY:

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

Three grades of milk are 1 percent, 2 percent, and 3 percent

Author Message
Manager
Joined: 13 Apr 2006
Posts: 56
Followers: 0

Kudos [?]: 8 [0], given: 0

Three grades of milk are 1 percent, 2 percent, and 3 percent [#permalink]

Show Tags

05 May 2006, 10:03
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Three grades of milk are 1 percent, 2 percent, and 3 percent fat by volume. If x gallons of the 1 percent grade, y gallons of the 2 percent grade, and z gallons of the 3 percent grade are mixed to give x+y+z gallons of a 1.5 percent grade, what is x in terms of y and z?

VP
Joined: 29 Dec 2005
Posts: 1343
Followers: 10

Kudos [?]: 62 [0], given: 0

Show Tags

05 May 2006, 18:49
kuristar wrote:
Three grades of milk are 1 percent, 2 percent, and 3 percent fat by volume. If x gallons of the 1 percent grade, y gallons of the 2 percent grade, and z gallons of the 3 percent grade are mixed to give x+y+z gallons of a 1.5 percent grade, what is x in terms of y and z?

0.01x+0.02y+0.03z=0.015(x+y+z)
0.02y-0.015y+0.03z-0.015z= 0.015x-0.01x
0.005y+0.015z= 0.005x
0.005(y+3z)= 0.005x
x = y+3z
Manager
Joined: 27 Mar 2006
Posts: 136
Followers: 1

Kudos [?]: 1 [0], given: 0

Show Tags

07 May 2006, 13:34
Agree x = y + 3z
Senior Manager
Joined: 29 Jun 2005
Posts: 403
Followers: 2

Kudos [?]: 21 [0], given: 0

Show Tags

08 May 2006, 09:28
Agree wil prof:
x/100+2y/100+3z/100=3/2*(x+y+z)
x+2y+3z=3/2*(x+y+z)
2x+4y+6z=3x+3y+3z
-x+y+3z=0
x=3z+y
Manager
Joined: 14 Mar 2006
Posts: 208
Followers: 2

Kudos [?]: 9 [0], given: 0

Show Tags

08 May 2006, 10:58
Is it ok to sovle it like this?

x+2y+3z= 1.5(x+y+z)
.5(y+3zy)= .5x
x=y+3z
Manager
Joined: 07 Mar 2006
Posts: 128
Followers: 1

Kudos [?]: 2 [0], given: 0

Show Tags

08 May 2006, 11:18
I am also agree x=y+3z
ma466
08 May 2006, 11:18
Display posts from previous: Sort by