Mr. Jones is working on a presentation. He completes 55% of the presentation in two days and needs to complete the rest on the third day. What percentage of the presentation does he need to complete on the third day?

To find out what percentage of the presentation Mr. Jones needs to complete on the third day, we first need to determine how much of the presentation he has already completed.

If he completed 55% of the presentation in two days, then he has 100% - 55% = 45% left to complete.

Since he needs to complete the rest on the third day, he needs to complete 45% of the presentation on the third day.

Therefore, Mr. Jones needs to complete 45% of the presentation on the third day.