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# One gallon of a soft drink is made of 40% orange juice and

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Manager
Joined: 23 Mar 2008
Posts: 217

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One gallon of a soft drink is made of 40% orange juice and [#permalink]

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19 Apr 2008, 08:30
1
KUDOS
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

One gallon of a soft drink is made of 40% orange juice and 60% water. How many additional gallons of orange juice must be mixed in to make the orange juice 60% of the soft drink?

a) 0.5
b) 1
c) 1.25
d) 1.5
e) 2

Kudos [?]: 199 [1], given: 0

Director
Joined: 10 Sep 2007
Posts: 934

Kudos [?]: 338 [1], given: 0

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19 Apr 2008, 10:08
1
KUDOS
Lets say there is 100 Gallons of drink, so 40 Gallons orange juice and 60 Gallons orange juice.

Now we want to add x Gallons of orange juice, so that (40+x)*100/(100+x) = 60

=> 4000 + 100x = 6000 + 60x
=> 40x = 2000
=> x = 50

100 Gallons need = 50 Gallons
1 Gallon needs = 50/100 = 0.5 Gallon

Kudos [?]: 338 [1], given: 0

Intern
Joined: 02 Apr 2008
Posts: 37

Kudos [?]: 12 [1], given: 0

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20 Apr 2008, 13:08
1
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puma wrote:
One gallon of a soft drink is made of 40% orange juice and 60% water. How many additional gallons of orange juice must be mixed in to make the orange juice 60% of the soft drink?

a) 0.5
b) 1
c) 1.25
d) 1.5
e) 2

(0.4+X)/(1.0+X)=0.6
0.4+X =0.6+0.6X
0.4X=0.2
X=2/4=1/2=0.5 gallon

Kudos [?]: 12 [1], given: 0

Re: juice   [#permalink] 20 Apr 2008, 13:08
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