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Algebra Difficulty 1.5 Junior Find the answer Canada

The operation $\otimes$ is defined by $a \otimes b = \dfrac{a}{b}+\dfrac{b}{a}$ . What is the value of $4 \otimes 8$ ?

Pick one

Solutions — 2

Solution 1

From the given definition, $4 \otimes 8 = \dfrac{4}{8}+\dfrac{8}{4} = \dfrac{1}{2}+2 = 2\dfrac{1}{2}=\dfrac{5}{2}$

Solution 2

From the given definition, $4 \otimes 8 = \dfrac{4}{8}+\dfrac{8}{4} = \dfrac{1}{2}+2 = \dfrac{5}{2}$

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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.