Question 815528
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Hi,
producing 8 liters of a 90% alcohol solution by mixing together a 75% solution and a 95% solution
 {{{95x + 75(8-x) = 90*8}}}  |After multiplying thru by 100
         x = {{{(8*90-75*8)/20}}}  solve for x and find (8-x):amount of 75% solution