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Spot the odd one out

Exercise and reference answers

Questions
  1. Items
    1. Speed and time
    2. Workers and days
    3. Distance and time
    Odd item
    Distance and time
  2. Items
    1. Rising speed
    2. Uniform speed
    3. Fixed route
    Odd item
    Rising speed
  3. Items
    1. km per hour
    2. kilograms
    3. hours
    Odd item
    kilograms

Explanation

One of these is not an inverse pair. Source: syllabus Maths, Ch 11 Direct and Inverse Proportions.
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