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Three of these are wrong. Find the one that holds.

Exercise and reference answers

Questions
  1. Question
    Three of these statements about workers and time are false.
    Choices
    1. Item
      Workers times days stays constant
      Correct
      Yes
    2. Explanation
      That is the DIRECT proportion form.
      Item
      Workers divided by days stays constant
    3. Explanation
      More workers finish a fixed job sooner.
      Item
      More workers means more days
    4. Explanation
      Time falls as the workforce grows.
      Item
      Time is unaffected by the workforce

Explanation

Each trap uses the direct-proportion equation on an inverse situation. Source: syllabus Maths, Ch 11 Direct and Inverse Proportions.
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