Hi I have problem with this question If you would mind helpi

Hi. I have problem with this question. If you would mind helping me please post the solution in a clear way and visible photo :) Thanks in advance!

Find the expected infiltration CFM and the ventilation CFM for a 12,000SF single-story reception area.. The office has 12\'-0\" high ceilings, single glass windows with no weather-stripping, and the exterior of the reception area has windows and exterior doors on three sides of the facility