Mathematics 4024 · O Level · Rates

Rates — practice question

As part of her training, Samantha covers $2$ hours of running. During the first $1\frac{1}{2}$ hours, her average speed is $10\text{ km/h}$. In the final $\frac{1}{2}$ hour, she covers $7\text{ km}$.
(main)[2]

Calculate her average speed over the $2$ hours.

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Carries out the calculation $1\frac{1}{2} \times 10 + 7$.” …

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