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3 marksWord Problems (Linear and Quadratic Equations/Inequalities)

CSEC Mathematics · January 2009 · Paper 2 · Question 2(d)(iii)

A drinking straw of length 21 cm is cut into 3 pieces. The length of the first piece is x cm. The second piece is 3 cm shorter than the first piece. The third piece is twice as long as the first piece.

Hence, calculate the value of x.

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Other parts of this question

  1. 2(a)Simplify, expressing your answer as a single fraction: 2m/n - 5m/(3n).[3 marks]
  2. 2(b)If a * b = a² - b, evaluate 5 * 2.[1 mark]
  3. 2(c)Factorize completely 3x - 6y + x² - 2xy.[2 marks]
  4. 2(d)(i)State, in terms of x, the length of EACH of the pieces.[2 marks]
  5. 2(d)(ii)Write an expression, in terms of x, to represent the sum of the lengths of the three pieces of drinking straw.[1 mark]

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