SOLUTION: If we want 25 mL of 18% alcohol diluted from 70% alcohol, we must do two steps: a) Solve this equation for x: 70% x = 18% (25 mL) x is the amount (in mL) of 70% alcohol needed.

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: If we want 25 mL of 18% alcohol diluted from 70% alcohol, we must do two steps: a) Solve this equation for x: 70% x = 18% (25 mL) x is the amount (in mL) of 70% alcohol needed.       Log On

 

Hi,

25 mL of 18% alcohol(82% water) diluted from 70% alcohol(30% water)

Let x represent the ml of water added to do this

          water = water