Algebra-2

Question Analysis
This problem assesses the understanding of combined variation, specifically how a quantity varies directly with one variable and inversely with another.

Key Concept Explanation
Combined variation involves a relationship where a quantity varies directly with the product of two or more other quantities and inversely with one or more other quantities. In this case, varies directly as and inversely as .

Step-by-step Solution
1. Given:
2. Substitute known values:
3. Simplify: →
4. Solve for :

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