dilution formula or a series of ratio- mL /0% isopropyl alcohol; 2/4.3 ml water proportions. 0.5% 7) The problem can be solved using either the 3) The problem can be solved using either the dilution formula, a ratio-proportion, or the dilution formula or a series of ratio- alligation method. 4 mL 2.5% cortisone proportions. 5% acetate suspension; 4 mL NS 4) The problem can be solved using either the 8) The problem can be solved using a series dilution formula or a series of ratio- of ratio-proportions. 31.9% alcohol proportions. 1:3000 9) The problem can be solved using either the 5) The problem can be solved using either the dilution formula or a series of ratio- dilution formula, a series of ratio- proportions. 2.6% amino acid; 17.5% 634