just need help with the idle percentage please

Problem 6-5 (Algo) As part of a major plant renovation project, the industrial engineering department has been asked to balance a revised assemb operation to achieve an output of 260 units per 7-hour day. Task times and precedence relationships are as follows: ok Immediate Predecessor Task a b nt Duration (minutes) 0.1 0.6 0.3 0.3 1.5 1.4 13 b C d ences d - ef 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) Idle percentage Ethiciency 5501 0167