Maths Olympiad Prep

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, 2025

Algebra Difficulty 1.4 Junior Find the answer Canada

Leticia can walk $1.5 \text{}
km}in in 20 \text{} minutes}$.
Walking at this same rate, how far does Leticia walk in 4 hours4 \text{ hours}?

Pick one

Solution

There are 60 minutes60 \text{ minutes}
in one hour.

Since $3×20\$3\times20\text{} minutes}=60 \text{}
minutes},and, and 3×1.53\times1.5 \text{}
km}= 4.5 \text{} km}, then Leticia can walk 4.5 \text{} km}$ in one hour.

Walking at this same rate, Leticia can walk 4×4.5 km=18 km4\times4.5\text{ km}=18 \text{ km} in
4 hours4 \text{ hours}.

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.