Maths Olympiad Prep

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CEMC Gauss (Grade 8), 2017

Algebra Difficulty 1.0 Junior Find the answer Canada

Michael has $280 in $20 bills. How many $20 bills does he have?

Pick one

Solutions — 2

Solution 1

Michael has $280 in $20 bills and so the number of $20 bills that he has is 280÷20=14280\div20=14.

Solution 2

Evaluating, (2+4+6)−(1+3+5)=12−9=3(2+4+6) - (1+3+5)=12-9=3.

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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.