Algebra
posted by Cassandra .
Ground beef sells for $4.75 per kg and ground pork sells for $5.50 per kg. How many kg of ground pork should be mixed with 8 kg of ground beef to make a mixture that sells for $5.10 per kg?
I don't know how to set this up or anything. Please help!

Let x=weight of ground pork in kg
then 8x=weight of ground beef.
total weight = 8 kg
therefore
5.50x + 4.75(8x) = 5.10 * 8
Solve for x.
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