Problema Solution
Liza has 10 songs on her MP3 player. If 3 songs are 5 minutes long, 3 are 4 minutes wrong, 2 are 2 minutes long, and 2 are 3.5 minutes long, what is the average length of the song
Answer provided by our tutors
we interpret "4 minutes wrong" to mean "4 minutes long"
total minutes of songs:
3*5 + 3*4 + 2*2 + 2*3.5 = 38
average time per song:
38 / 10 = 3.8
the average length of each song is 3.8 minutes