Maths Olympiad Prep

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, 2020

Algebra Difficulty 1.1 Junior Find the answer Canada

If x=4x=4 and x+y=0x+y=0, what is the value of yy?

Pick one

Solution

The increase in temperature equals the warmer afternoon temperature minus the colder morning temperature.

The difference between 5 and 3-3 is 5(3)=5+3=85-(-3)=5+3=8.
The temperature increased by 8°8\degreeC.

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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.