to make a mixture of 80 pounds of coffee worth $272 a grocer mixes coffee wortg $3.25 a pound with cofee worth $3.85 a pound.How many pounds of the cheaper coffee should grocer use........60lb

Answer 1

3.25x + 3.85(80-x) = 272.
3.25x - 3.85x + 308 = 272, X = ?.