Question

iris has 120 song on her playlist . each week , she downloads 4 new song

Answer 1

By the end of the year she would have 208 songs on her playlist because there are 52 weeks in a year and 4 songs a week makes her download 88 songs in the year

Answer 2

That mean Iris will have 124 songs the next week. Every week just add 4. Hope this was helpful :)