Solve this math problem?

A car CD changer has 6 CDs in it each CD contains 20 songs which totals to 120 songs 80 of the songs are Genre A and 40 are Genre B. If the ratio of songs in Genre A to Genre B is the same on each individual CD as it is on all 6 CDs as a whole how many songs of Genre A are on a single CD? How many of Genre B?