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, 2020

Algebra Difficulty 1.4 Junior Find the answer Canada

Abdul is 9 years older than Susie, and Binh is 2 years older than Susie. How many years older is Abdul than Binh?

Pick one

Solution

Abdul is 9 years older than Susie, and Binh is 2 years older than Susie, and so Abdul is $9-2=7$ years older than Binh.
For example, if Susie is 10 years old, then Abdul is $9+10=19$ , Binh is $2+10=12$ , and Abdul is $19-12=7$ years older than Binh.

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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.