SOLUTION: • How many pounds of tea worth 6 dollar per pound should be mixed with 20 pounds of tea worth 4.50 dollars per pound to get a mixture to be sold for 5 dollars per pound?

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Question 667133: • How many pounds of tea worth 6 dollar per pound should be mixed with 20 pounds of tea worth 4.50 dollars per pound to get a mixture to be sold for 5 dollars per pound?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = pounds of $6 tea needed
+%28+6x+%2B+4.5%2A20+%29+%2F+%28+x+%2B+20+%29+=+5+
+%28+6x+%2B+90+%29+%2F+%28+x+%2B+20+%29+=+5+
+6x+%2B+90+=+5%2A%28+x+%2B+20+%29+
+6x+%2B+90+=+5x+%2B+100+
+x+=+10+
10 pounds of $6 tea are needed
check:
+%28+6%2A10+%2B+90+%29+%2F+%28+10+%2B+20+%29+=+5+
+150+%2F+30+=+5+
+5+=+5+
OK