Question

Mary is the presenter of a weekly radio show. She plays five new songs for every two old songs. Last week she played 15 new songs. How many songs did she play altogether?​

Answer 1

She plays 5 new songs for every 2 old ones.

If she plays 15 new songs, she will play 6 old songs.

15 + 6 = 21

thus, she played 21 songs altogether.