The total volume required to reach the endpoint of a titration

The total volume required to reach the endpoint of a titration required more than the 50 mL total volume of the buret. An initial volume of 49.73 ± 0.05 mL was delivered the buret was refilled and an additional 1.49 ± 0.05 mL was delivered before the endpoint was reached. The titration of a blank solution without the analyte required 0.49 ± 0.04 mL. Calculate the endpoint volume corrected for the blank and its absolute uncertainty.