## GMAT Practice Question Set #46 (Question 136-138)

Problem Solving Question #136: Sand and Soil
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 10kg of a mixture contains 30% sand and 70% soil. In order to make the mixture contain equal quantities of soil and sand, how much of the mixture is to be removed and replaced with pure sand? (A) 25/7 (B) 20/7 (C) 2 (D) 3 (E) 17/13
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