The age of the person is 36 :) hoped this helped

the memory is the independent, because that can vary at will, so it's independently varying at will, whilst the amount of songs are limited to how much memory there's in the CD, so the songs are dependent on the memory availability.
4(6) +6(6) + 6x=108 24+36+6x=108 60+6x+108 -60 -60 6x=48 x=8 Less confusing
15*12 equals 90. 2*12 is 24. Those two together equals 114. (This is an educated)
21:30 and 35:50
Explain:
21:30➗3 =7:10
35:50➗5=7:10