Question 522326
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Let *[tex \Large x] represent the number of lbs of 19% fat hamburger.  Then *[tex \Large 77\ -\ x] must be the number of lbs of 12% fat hamburger if the two amounts must total 77 lbs.  *[tex \Large 0.19x] is the amount of fat in the 19% fat hamburger and *[tex \Large 0.12(77\ -\ x)] is the amount of fat in the 12% fat hamburger, and *[tex \Large 0.14(77)] is then amount of fat in the mixture.


Since the sum must equal the total:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 0.19x\ +\ 0.12(77\ -\ x)\ =\ 0.14(77)]


Solve for *[tex \Large x].  Then calculate *[tex \Large 77\ -\ x]


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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