A) \[\frac{1}{12}\]
B) \[\frac{1}{7}\]
C) \[\frac{7}{12}\]
D) \[\frac{7}{15}\]
Correct Answer: C
Solution :
(c): \[x+y=7\] ....(1) \[xy=12\] ....(2) Dividing (1) & (2) \[\frac{x+y}{xy}=\frac{7}{12}\] Or \[\frac{1}{x}+\frac{1}{y}=\frac{7}{12}\](ANS)You need to login to perform this action.
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