Chemistry: Can someone help me do combined gas law problems?(requires Daltons law also)

I need help in doing these type of problems: Example:
45.0 L of wet argon is collected at 729.3 mmHG and 25'C. What would be the volume of this dry gas at standard conditions?
PLZ help explain how to do it

First, you need to know the vapor pressure of water at 25°C. The source below says 23.756 mm Hg.

(45.0 L) x ((729.3 - 23.756) / 760) x (273 / (25 + 273)) = 38.3 L