A) \[\frac{1}{12}\]
B) \[\frac{1}{7}\]
C) \[\frac{7}{12}\]
D) \[\frac{7}{15}\]
Correct Answer: C
Solution :
(c): Let the numbers be x and y. According to the question, \[x+y=7~\] ....(i) and \[~xy=12\] ....(ii) \[\Rightarrow \frac{1}{x}+\frac{1}{y}=\frac{y+x}{xy}=\frac{7}{12}\] \[\Rightarrow \frac{1}{x}+\frac{1}{y}=\frac{7}{12}\]
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