Let the number of hours Paul needs to work = h.
You need to multiply Paul's hourly rate by the number of hours (h) to either be equal to or greater than what Alan makes:
The equation would be:
8.25h ≥ 363
To Solve divide both sides by 8.25
h ≥ 363 / 8.25
h ≥ 44
Paul needs to work at least 44 hours