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

Problem Solving Question #136: Sand and Soil  
Time 0 0 : 0 0 : 0 0

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`

GMATTM is a registered trademark of the Graduate Management Admission CouncilTM. The Graduate Management Admission CouncilTM does not endorse, nor is it affiliated in any way with the owner or any content of this web site.