Math - urgent
posted by anna .
2. A technician has prepared three solutions from a 600 mL stock solution.
• In preparing the first solution ½ of the original volume of the stock solution was used.
• The second solution required ¼ of the remaining stock solution.
• Preparation of the third solution used 3/5 of the remaining stock solution.
What fraction of stock solution remains?
Is 3/20 correct?