How many tons of coal valued at $140 a ton should be mixed with coal worth $190
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How many tons of coal valued at $140 a ton should be mixed with coal worth $190 a ton to obtain a mixture of 32,000 tons of coal worth $175 a ton?
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Related Book For 
Schaum S Outline Of Mathematical Methods For Business Economics And Finance
ISBN: 978-1264266876
2nd Edition
Authors: Luis Moises Pena Levano
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