Question 328819
v+c=9 or v=9-c
14.95v+16.88c=138.41
14.95(9-c)+16.88c=138.41
134.55-14.95c+16.88c=138.41
1.93c=138.41-134.55
1.93c=3.86
c=3.86/1.93
c=2 cds were bought.
v=9-2=7 video were bought.
Proof:
14.95*7+16.88*2=138.41
104.65+33.76=138.41
138.41=134.41