Maths Olympiad Prep

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, 2025

Algebra Difficulty 1.1 Junior Find the answer Canada

In a survey, each student chose their favourite day of the week.
In the graph, the percentages of those surveyed who selected each day of
the week is shown.

If 30003000 students were surveyed,
how many people chose Friday as their favourite day of the week?

Pick one

Solution

Reading from the graph, 20%20\%
of the students surveyed chose Friday.

Since 30003000 students were surveyed,
the number of students who chose Friday as their favourite day of the
week was 20100×3000=20×30=600\dfrac{20}{100}\times3000=20\times30=600.

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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.