Question 1016754
 Benny mixed 12 mL of an acidic solution with 11 mL of a 41% acidic solution, to make 45% acidic solution.
 Find the percent acid concentration of the first solution.
:
Let x = the percent of the 12 ml solution in decimal form
12x + .41(11)  = .45(12+11)
12x + 4.51 = .45(23)
12x  = 10.35 - 4.51
12x = 5.84
x = 5.84/12
x = .4867, 48.67% the percent of the 12 ml solution