$1.$ Work measurement and productivity problems. $10$ points total

a$.$ Based on a productivity log$,$ a coder completed $22$ charts during a $7\mathrm{.}5-$hour workday. How many charts did he code per hour? Round to the nearest whole number. $(5$ points$)$

b$.$ Based on work measurement studies on your coders, you find that $20\%$ of their time is spent querying physicians about missing or unclear documentation. If your coders work a $7\mathrm{.}5-$hour day, how many minutes do they spend per day querying physicians? $(5$ points$)$

c$.$ A coding supervisor reviewed the productivity logs of four recently$-$hired coders after one month $($coders work $5$ days per week.$)$ The supervisor compiled a report, shown below. Complete analysis of the report and determine which employee will require additional training or assistance in order to meet the coding standard. $(5$ points$)$