Bell, Inc. buys 1,500 computer game CDs from a distributor who is discontinuing those games. The purchase price for the lot is $8,200. Bell will group the CDs into three price categories for resale, as indicated below

Group	No. of CDs	Price per CD
1	300	$6
2	1000	$12
3	200	$18

Determine the cost per CD for each group, using the relative sales value method. (Do not round ratios for computational purposes and round final answers to 2 decimal places, e.g. 5.85.)

Group	Cost per CD
1
2
3

Please show me how to get to the answer instead of just giving me the answer.