SOLUTION: Mary bought 6 new compact disks and 2 used compact disks for $127.92. At the same prices, Neal bought 3 new compact disks and 8 used compact disks for $133.89. Find the cost of buy

Question 1106191: Mary bought 6 new compact disks and 2 used compact disks for $127.92. At the same prices, Neal bought 3 new compact disks and 8 used compact disks for $133.89. Find the cost of buying a single used compact disk.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the cost of a single new CD
Let = the cost of a single used CD
-------------------------------------
(1)
(2)
-----------------------------
Multiply both sides of (1) by
and subtract (2) from (1)
You can finish

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