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Difficulty: 2/102024 NMTC 2024 (QII-64)

If is inversely proportional to q, and p=8 when q=6, what is the value of when p=12?

Guide / Hint

Hint 1: Recall that inverse proportionality between and means for some constant .

Hint 2: Determine the value of using the initial values and .

Hint 3: Substitute into the equation and solve for .

Solution

Step 1 (Inverse Proportion Formula): Since is inversely proportional to , their product is a constant :

Step 2 (Solve for Constant k): We are given when . Substituting these values to find :

So the relation is .

Step 3 (Find q when p = 12): Substitute into the relation:

Step 4 (Conclusion): The value of when is exactly 4.

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    2024 NMTC 2024 QII-64 - Olympiad Math Olympiad Question | Leminno