SOLUTION: A butcher has some hamburger that is 19% fat and some that is 11% fat. How many pounds of each should be mixed to make 80 lb of hamburger that is 13% fat?

Question 940047: A butcher has some hamburger that is 19% fat and some that is 11% fat. How many pounds of each should be mixed to make 80 lb of hamburger that is 13% fat?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
percent ---------------- quantity
Hamburger I 19.00% ---------------- x lb
Hamburger II 11.00% ------ 80 - x lb
Mixture 13.00% ---------------- 80
Total 80 lb
19.00% x + 11.00% ( 80 - x ) = 13.00% * 80
19 x + 11 ( 80 - x ) = 1040
19 x + 880 - 11 x = 1040
19 x - 11 x = 1040 - -880
8 x = 160
/ 8
x = 20 lb 19.00% Hamburger I
60 lb 11.00% Hamburger II

m.ananth@hotmail.ca

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