Answer
$$ \frac{5}{2}$$
Work Step by Step
We find the ratio of the best selling song to the worse selling song in the table:
$$ =\frac{33\ million}{10\ million} \\ =\frac{33}{10}$$
For the second best and second worse sellers, the ratio is as follows:
$$=\frac{30\ million}{12\ million} \\ \frac{5\times 6}{2\times 6} \\ \frac{5}{2}$$
