Question

60 percent of the songs Samir plays are 5 minutes long, 10 percent are 3 minutes long, and 30 percent are 2 minutes long. What is the average number of minutes per song ?

A. 1
B. 2
C. 3.9
D. 4.1
E. 4.5

Answer 1

it's 3.9

Explanation:

Assume Samir has total 100 songs and use combined mean formula