Zara travels a distance of $500\text{ m}$, correct to the nearest $5\text{ m}$. The journey lasts $24.7\text{ s}$, correct to the nearest $0.1\text{ s}$.
(main)[3]
Calculate the lower bound of her average speed.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “20.1” …