SOLUTION: Jennifer purchased CDS. Some CDS were from a bin marked "2 for $12" and others were priced at $17. If the total for 11 CDs cost $143, how many CDS were from the "2 for $12" bin?

Question 1009933: Jennifer purchased CDS. Some CDS were from a bin marked "2 for $12" and others were priced at $17. If the total for 11 CDs cost $143, how many CDS were from the "2 for $12" bin?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Jennifer purchased CDS. Some CDS were from a bin marked "2 for $12" and others were priced at $17. If the total for 11 CDs cost $143, how many CDS were from the "2 for $12" bin?
------
t + n = 11 CD's
6t + 17n = 143 dollars
--------
Modify for elimination:
6t + 6n = 6*11
6t + 17n = 143
-------------------
Subtract and solve for "n"::
11n = 77
---
n = 7 (# of singles)
t = 11-n = 4 (# of 2fers)
Cheers,
Stan H.
------
RELATED QUESTIONS
Nancy bought 12 CDs. Some of the CDs coat $7.50 each and the rest cost $6.50 each. How... (answered by aquyu214)

A store sold 2 CDs for every 4 DVDs. If 564 DVDs were sold, how many CDs were... (answered by Cromlix)

A package of 12 recordable CDs contains 3 which are defective. If 4 CDs are selected at... (answered by stanbon)

A company sells DVDs d and CDs c. The figure shows a red, solid graph of d+c =1500. The... (answered by John10)

Can you please help me with this question please! Paul brought some CDs in a sale. He (answered by Mathtut)

If the record company charges you $12 for five cds, and $20 for nine cds. How much would... (answered by Edwin McCravy)

Mark wants to buy some used CDs from hasting. He can get 6 CDs for $50.10 and 9 CDs for... (answered by Zucchini)

Overtures used media store had CDs on sale for $8 each and DVDs on sale for $11 each.... (answered by checkley77)

Freedom Tunes sells used CDs for $5.99 and used videos for $7.99. Holly recently... (answered by rfer)