Solve the problem.The manager of a candy shop sells chocolate covered peanuts for $10 per pound and chocolate covered cashews for $13 per pound. The manager wishes to mix 30 pounds of the cashews to get a 
mixture that will sell for $12 per pound. How many pounds of peanuts should be used?
A. 15 lb
B. 22.5 lb
C. 45 lb
D. 7.5 lb
Answer: A
Mathematics
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