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DS - Topic Average ; GMAT around the corner

by soni_pallavi » Wed Nov 14, 2012 12:34 pm
Q1) How many gallons of water should be added to the mixture to make the average value of the mixture $480 per gallon

1)5 gallons of Milk type 1 is mixed with 6 gallons of Milk type 2

2)Milk of type 1 is 600$ per gallon and the cost of type 2 is 90% of cost of Milk 1.

Is the answer C??

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by eaakbari » Wed Nov 14, 2012 1:09 pm
Well answer seems to be E as there is no mention of water in either of the statements.

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by Anindya Madhudor » Wed Nov 14, 2012 2:05 pm
Both statement could be used to solve the problem assuming water costs nothing.
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