Coleman Rich Control Devices, Inc., produces custom$-$built relay devices for auto makers. The most recent project undertaken by Rich requires $14$ different

activities. Rich's managers would like to determine the total project completion time $($in days$)$ and those activities that lie along the critical path. The appropriate data

are shown in the following table:

a$)$ The expected completion time of the project $=$ days $($round your response to two decimal places$).$