Rose has a playlist with 40 rock songs and 28 country songs. What is the ratio of country songs to rock songs on the playlist?

To find the ratio of country songs to rock songs on the playlist, we can divide the number of country songs by the number of rock songs.

Country songs: 28
Rock songs: 40

Ratio of country songs to rock songs:
28 / 40 = 0.70

Therefore, the ratio of country songs to rock songs on the playlist is 0.70 or 7:10.