SOLUTION: Ellen wishes to mix candy worth $1.15 per pound with candy worth $2.87 per pound to form 20 pounds of a mixture worth $1.58 per pound. How many pounds of the more expensive candy s

Question 477275: Ellen wishes to mix candy worth $1.15 per pound with candy worth $2.87 per pound to form 20 pounds of a mixture worth $1.58 per pound. How many pounds of the more expensive candy should she use?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Ellen wishes to mix candy worth $1.15 per pound with candy worth $2.87 per pound to form 20 pounds of a mixture worth $1.58 per pound. How many pounds of the more expensive candy should she use?
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Quantity Eq::: c + e = 20 lbs.
Value Eq:: 115c +287e= 158*20 cents
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Multiply thru the Quantity equation by 115:
115c + 115e = 115*20
115c + 287e = 158*20
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Subtract and solve for "e":
172e = 43*20
Amount of expensive candey needed = 5 lbs.
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cheers,
Stan H.
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