A contractor combined \(x\) tons of a gravel mixture that contained \(10\) percent gravel \(G,\) by weight, with y tons

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E

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A contractor combined \(x\) tons of a gravel mixture that contained \(10\) percent gravel \(G,\) by weight, with y tons of a mixture that contained \(2\) percent gravel \(G,\) by weight, to produce \(z\) tons of a mixture that was \(5\) percent gravel \(G,\) by weight. What is the value of \(x?\)

(1) \(y = 10\)

(2) \(z = 16\)

Answer: D

Source: GMAT Prep
Source: — Data Sufficiency |