What volume (mL) of 0.2875 M NaOH is theoretically required to titrate 20.00 mL of
0.1276 M HCI?

Question: What volume (mL) of 0.2875 M NaOH is theoretically required to titrate 20.00 mL of 0.1276 M HCI? Your Answer units What is the percent error, if the volume of 0.2875 M NaOH that is experimentally required to titrate 20.00 mL of 0.1276 M HCl is found to be 11.84 mL? Your Answer units.

first one is the correct answer