Mathematics

Kolby Jenkins

29 July, 11:07

A merchant has coffee $20 a pound that she wishes to mix with 70 pounds of coffee worth $50 a pound to get a mixture that can be sold for $30 a pound. how many pounds of $20 coffee should be used?

A) 70 pounds

B) 210 pounds

C) 105 pounds

D) 140 pounds

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