Algebra › Section G · Rational expressions and functions › Topic G.5
Applications of rational equations
Some problems naturally produce an equation with the variable in a denominator — sharing a job, splitting a journey against a current, matching shadows to heights. Rational equations are how the real world divides.
In this topic
- Proportions: two equal ratios
- Similar triangles: shadows and heights
- Work problems: rates add
- Worked example: two printers
- Worked example: a plane against the wind
- Set up a chart before the equation
- Context edits the answer list
- Common mistakes to avoid
- Key takeaways
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