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2 marksRatio and Proportion

CSEC Mathematics · 2021 · Paper 2 · Question 1(d)

The ratio of teachers to male students to female students in a school is 3:17:18. If the TOTAL number of students in the school is 630, determine the number of teachers in the school.

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  1. 1(a)Using a calculator, or otherwise, calculate the EXACT value of 1\frac{4}{7} \div \frac{2}{3} - 1\frac{5}{7}.[2 marks]
  2. 1(b)When Meghan started working, she was paid…[1 mark]
  3. 1(c)(i)a)Write the population in 2015 correct to 3 significant figures.[1 mark]
  4. 1(c)(i)b)Write the population in 1965 in standard form.[1 mark]
  5. 1(c)(ii)Determine the percentage increase in the population from 1965 to 2015.[2 marks]

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