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Question
If x and y vary inversely as other and y = 35, find x when constant of variation = 7.
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Solution
\[ \text{ Given } : \]
\[y = 35 \text{ and } k = 7\]
\[\text{ Now } , xy = k\]
\[ \Rightarrow 35x = 7\]
\[ \Rightarrow x = \frac{7}{35}\]
\[ = \frac{1}{5}\]
\[ \therefore x = \frac{1}{5}\]
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