Maths Olympiad Prep

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, 2023

Algebra Difficulty 1.3 Junior Find the answer Canada

A grocery receipt shows the cost of three items before tax is
added.

A 5%5\% tax is added to the cost
of the items. The total cost of the three items, including tax, is

Pick one

Solution

The number of integers in the list is 10. Of these integers, 5
are even (they are 10, 12, 14, 16, and 18). Thus, the probability that
the chosen integer is even is 510\dfrac{5}{10}.

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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.