A year earlier, Ahmed’s height measured 114 cm. At present, his height measures 120 cm. Each reading is accurate to the nearest centimetre.
(main)[2]
Calculate the upper bound of the increase in Ahmed’s height.
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This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The value $120.5$ or $113.5$ is shown” …
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