Dr adams has three acidic solutions with the following concentrations: 1%, 2%, and 8%. how many ml of each would be needed to make 20ml of 6% solution if she uses 3x as much of the 2% solution as the 1% solution?
1% / 2% / 8%
a) 4.6ml / 13.8ml / 1.6ml
b) 3.8ml / 11.4ml / 4.8ml
c) 1.6ml / 4.8ml / 13.6ml
d) 4.4ml / 1.5ml / 14.1ml