Question 1059775
The candy shack has 20 lb of mixed white and dark chocolates worth 7.50 per pound. White chocolate alone will sell for 8.00 a pound and dark chocolate sell for 6.00 a pound. How many pounds of each are in the mixture 
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Equations:
w + d = 20 lbs
8w + 6d = 7.5*20 dollars
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Modify for elimination:
8w + 8d = 8*20
8w + 6d = 150
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Subtract and solve for "d":
2d = 10
d = 5 lbs (wt. of dark)
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Solve for "w":
w = 20-d = 15 lbs (wt of white)
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Cheers,
Stan H.
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