Question 907699
2YZ = 5XY


YZ = 5XY/2

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XY/XZ = XY/(XY + YZ)


XY/XZ = XY/(XY + 5XY/2)


XY/XZ = 2XY/(2XY + 5XY)


XY/XZ = 2XY/(7XY)


XY/XZ = 2/7


So the answer is <font color="red">Choice D) 2/7</font>