Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
Source: GMAT Prep
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.
The OA is D.
One equation will be 10x + 2y = 5z.
Other equation, x + y = z.
Statement 1: y = 10. Sufficient 3 equations and 3 variables.
Statement 2: z = 16. Sufficient 3 equations and 3 variables.
Hence, D is the correct answer.
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.
The OA is D.
One equation will be 10x + 2y = 5z.
Other equation, x + y = z.
Statement 1: y = 10. Sufficient 3 equations and 3 variables.
Statement 2: z = 16. Sufficient 3 equations and 3 variables.
Hence, D is the correct answer.
