J.R. S. answered 09/19/17
Tutor
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(145)
Ph.D. in Biochemistry--University Professor--Chemistry Tutor
Let x = lbs of $5.85/lb tea
90 - x = lbs of $2.85/lb tea
Total = 90 lb and total cash = 90 lb x $3.25/lb = $292.50
(x)(5.85) + (90-x)(2.85) = (90)(3.25)= 292.50
5.85x + 256.50 - 2.85x = 292.50
3x = 36
x = 12 lbs of the $5.85/lb tea mixed with 78 lbs of the $2.85/lb tea to produce 90 lbs of $3.25/lb tea