Question

Dule 1 Study Guide Algebra 1

7) MUSIC Lavant is making a playlist for an upcoming trip. The average length of a song on his
digital music player is 4 minutes 3 seconds. If he expects the flight to last about 3 hours 20
minutes, how many songs should LaVant put on the playlist?
O 37.5
O 40
50
O 63

Answer 1

Explanation:

how many average length songs will fit into 3 hours and 20 minutes ?

3 hours = 3×60 minutes = 3×60×60 = 3×3600 =

= 10800 seconds

20 minutes = 20×60 = 1200 seconds

the whole flight lasts 10800 + 1200 = 12000 seconds.

the average song is

4 minutes = 4×60 = 240 seconds

and 3 seconds

= 243 seconds

how many songs ?

12000 / 243 = 49.38271605... songs

so, we need to round up to avoid any silent gaps.

if he does not want any repetitions, he needs to put at least 50 songs on his playlist.