GMAT Quantitative Reasoning Practice Test 1

Question : 89 of 100

Marks: +1, -0

A 48 gallon solution of salt and water is

10 \%

salt. How many gallons of water must be added to the solution in order to decrease the salt to

8 \%

of the volume?

Solution:

Solve a combined average problem:

\;{48 × 10 \%+X × 0 \%}/{48+X}=8 \%

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