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Algebra Difficulty 1.1 Junior Find the answer Canada

The expression $\dfrac{20+16\times 20}{20\times 16}$ equals

Pick one

Solution

Evaluating, $\dfrac{20+16\times20}{20\times 16} = \dfrac{20 + 320}{320} = \dfrac{340}{320} = \dfrac{17}{16}$ .

Alternatively, we could notice that each of the numerator and denominator is a multiple of 20, and so $\dfrac{20+16\times20}{20\times 16} = \dfrac{20(1+16)}{20\times 16} =\dfrac{1+16}{16}=\dfrac{17}{16}$ .

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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.