Rob, Billy, Yulia, and Devin are each trying to make a solution that requires 30 mL of stock to be added. Rob uses a 25 mL pipette and a 5 mL pipette; Billy uses a 5 mL pipette 6 times; Yulia uses a 50 mL burette; and Devin uses a 25 mL graduated cylinder. Assuming that the only error introduced was by the variance in the glassware, determine the cumulative error for each person.

Pipettes
5 mL	+/- 0.01 mL
25 mL	+/- 0.03 mL
Burette
50 mL	+/- 0.05 mL
Graduated Cylinder
25 mL	+/- 5%