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Order the steps: compare two speeds on one route

Exercise and reference answers

Steps
  1. Note that both journeys cover the same distance
  2. Multiply the first speed by the first time
  3. Set that equal to the second speed times the unknown time
  4. Solve for the unknown time
  5. Check the faster journey came out shorter

Explanation

Treat it as an inverse proportion between the two journeys. Source: syllabus Maths, Ch 11 Direct and Inverse Proportions.
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