If x, y, z are three numbers such that x + y = 13, y + z = 15 and z + – McqOptions

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1.	If x, y, z are three numbers such that x + y = 13, y + z = 15 and z + x = 16, then the value of \(\frac{{xy + xz}}{{xyz}}\) is:
A.	36/5
B.	5/18
C.	18/5
D.	5/36
Answer» C. 18/5

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