SOLUTION: Harry spends $62 on four CDs two DVDs. the next day he spends $57 on two CDs and 3 DVDs. how much does one CD and one DVD cost?

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Question 1018855: Harry spends $62 on four CDs two DVDs. the next day he spends $57 on two CDs and 3 DVDs. how much does one CD and one DVD cost?
Found 2 solutions by stanbon, MathTherapy:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Harry spends $62 on four CDs two DVDs. the next day he spends $57 on two CDs and 3 DVDs. how much does one CD and one DVD cost?
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4C + 2D = 62
2C + 3D = 57
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Modify for elimination:
4C + 2D = 62
4C + 6D = 114
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Subtract and solve for "D"::
4D = 52
D = 12 (Cost of a DVD)
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Solve for "C"::
2C + 3D = 57
24 + 3D = 57
3D = 33
D = 11 (Cost of a CD)
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Cheers,
Stan H.
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Answer by MathTherapy(10555)   (Show Source): You can put this solution on YOUR website!

Harry spends $62 on four CDs two DVDs. the next day he spends $57 on two CDs and 3 DVDs. how much does one CD and one DVD cost?
  

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