Answer: 9:4
Step-by-step explanation:
Number of rock songs = 10
Number of rap songs = 6
Number of pop songs = 2
Total number of songs = 18
The ratio of all songs to songs that are not rock will be:
= 18 : (6 + 2)
= 18 : 8
= 18/8 = 9/4
= 9:4
The answer is 9:4