At a flea market, Joe bought some DVDs and CDs.

Nann 2021-08-12 Answered
At a flea market, Joe bought some DVDs and CDs.
The CDs sold for $5.00 each, and the DVDs sold for $3.00 each.
If the total cost of the items was $73.00 and the total number of products sold was 17, find how many of each item Joe bought.
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Expert Answer

Bentley Leach
Answered 2021-08-13 Author has 109 answers

Let x be the number of CDs bought and y be the number of DVDs bought.
The total number of products sold was 17:
x+y=17 (1)
The total cost of the items was $73.00:
5x+3y=73 (2)
Solve for y using (1) to obtain (3):
y=17x (3)
Substitute (3) to (2) and solve for x:
5x+3(17x)=73
5x+513x=73
2x+51=73
2x=22
x=11
Solve for y using (3):
y=1711
y=6
Joe bought 11 CDs and 6 DVDs

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