Question

Are these ratios equivalent?9 cellos to 10 basses 18 cellos to 20 basses

Answer 1

ratios are equivalent if the cross product between the two is equal, we do

`\begin{gathered} (9)/(10)y(18)/(20) \\ 9*20=18*10 \\ 180=180 \end{gathered}`

therefore, ratios are equivalent

answer: yes, ratios are equivalent