just need help with problem E please!

As part of a major plant renovation project, the industrial engineering department has been asked to balance a revise operation to achieve an output of 260 units per 7-hour day. Task times and precedence relationships are as follows: Immediate Predecessor Task a b d Duration (minutes) 8.1 0.6 0.3 0.3 1.5 1.4 1.3 b d f C e. Compute the percent idle time and percent efficiency for the assignment in part d. Note: If the calculated cycle time and the actual bottleneck station time are different, use the actual bottleneck time in your calculations. (Round your answers to 2 decimal places) Ide percentago Eticincy