The Wong Group (WG) provides tax advice to multinational firms. WG charges clients for (a) direct professional time (at an hourly rate) and (b) support services (at 30% of the direct professional costs billed). The three professionals in WG and their rates per professional hour are as follows: (Click the icon to view the hourly rates.) WG has just prepared the May 2020 bills for two clients. The hours of professional time spent on each client are as follows: (Click the icon to view the hours by client.) Read the requirements.