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WAEC 2021 · Paper 1 · Q43

The distance dd between two villages is more than 18 km18\text{ km} but not more than 23 km23\text{ km}. Which inequality represents the statement?

Worked solution (try it first)
  1. "More than 18 km" means d>18d > 18.
  2. 18 itself is not allowed.
  3. "Not more than 23 km" means d≤23d \le 23.
  4. 23 is allowed.
  5. Together: 18<d≤2318 < d \le 23, option D.

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