To know the cost per song we make a division between the total Cost and the number of songs, then we can take any pair of data
I will use 11 songs and $10.56
[tex]\frac{10.56}{11}=\frac{24}{25}=0.96[/tex]
to check we can use another pair (18 songs and $17.28)
[tex]\frac{17.28}{11}=\frac{24}{25}=0.96[/tex]
then the cost per song is $0.96
