Mathematics 0580 · IGCSE · Ratio and proportion

Ratio and proportion — practice question

Gerry and Alain each lap a running track. Gerry always needs 90 seconds for one complete circuit, whereas Alain always needs 105 seconds. They begin together from the same point.
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After how many minutes will they be together at that point again?

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$10.5\text{ minutes}$” …

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