Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Ratios, Proportions & PercentagesDirect and Inverse Variations
If $y$ is inversely proportional to $x$, and $y = 10$ when $x = 2$, find $y$ when $x = 5$.
- A.$4$Correct answer
- B.$5$
- C.$20$
- D.$25$
Timed quizzes, instant results, track your progress — free
Practice these MCQs in the appQuick fact: Since $y \propto \frac{1}{x}$, the constant $k = xy = 20$, so when $x = 5$, $y = \frac{20}{5} =$ $4$.