# Fractions

posted by
**anna**
.

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?