Answer :
Lets organize out the numbers and calculate them,
so .....
Country music cd is $12
Rock music cd is 12× 2/3 = $8
Platinum edition cd is $8 x 2 = $16
add up all of the final numbers
16+12+8 = $36
Your answer is
$36
so .....
Country music cd is $12
Rock music cd is 12× 2/3 = $8
Platinum edition cd is $8 x 2 = $16
add up all of the final numbers
16+12+8 = $36
Your answer is
$36
country $12
rock 2/3 (12)= $8
platinum 2 (8)= $16
total; cost = $36
hope this helps