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JAMB 2003 · UME · Q40

The histogram shows the ages of the victims of a pollution. How many people were involved in the pollution?

0–1010–2020–3030–4040–50123456No. of peopleAge (years)
Worked solution (try it first)
  1. Each bar's height is the number of people in that age group.
  2. Read the bars: 3, 4, 5, 6 and 2.
  3. Add them: 3+4+5+6+2=203 + 4 + 5 + 6 + 2 = 20 people, option D.

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