Anna and Carol buy CDs and tapes at a music store that sells each of its CDs for a certain price and each of its tapes for a certain price. Anna spends twice as much as Carol spends, buying three times as many CDs and the same number of tapes. If Carol spends $80.00 on four CDs and five tapes, how much does one tape cost? Choose the correct answer
A) $5.00
B) $6.25
C) $12.00
D) $8.00
E) $100.00
C$8.00 =&gt; C   Type =&gt; T   Carol: 4C+5T=80   Anna: 12C+5T=160   12C-4C=80   8C=80   C=10   4C+5T=80   40+5T=80   5T=40   T=8   Answer is $8.00
<result>D</result>
Anna and Carol buy CDs and tapes at a music store that sells each of its CDs for a certain price and each of its tapes for a certain price. Anna spends twice as much as Carol spends, buying three times as many CDs and the same number of tapes. If Carol spends $80.00 on four CDs and five tapes, how much does one tape cost?