Simple scaling laws

Simple scaling laws

Secondary 2
TGM Original Questions
  1. The quantity \(x\) is directly proportional to \(3y^2\). If \(y\) increases by \(120\%\), find the percentage increase in \(x\).
  2. The quantity \(p\) is inversely proportional to \(q^2\). If \(p=10\) for one value of \(q\), find \(p\) when that \(q\)-value is doubled.

Solution:

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Answer:(a) \(384\%\) increase; (b) \(p=2.5\).

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