Cycling speed model

Cycling speed model

Secondary 2
6 marks
TGM Original Questions

Optional extension

A cyclist covers \(140\) km in \((x-4)\) h at \((3x+1)\) km/h.

  1. Form and simplify a quadratic equation.[2]
  2. Solve it.[2]
  3. Find the cyclist’s average speed.[2]

Solution:

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Answer:(i) \(3x^2-11x-144=0\) (ii) \(x=9\) (iii) \(28\) km/h.

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