a$.$ Fill in the table below for a shift output of $25$ pieces. Break ties by choosing the lowest task number. If your answer is zero, enter $"0".$ Round your answers to the nearest whole number.

$\backslash$table$[[$Workstation$,$Tasks,Total Time,Idle Time$],[1,-$select$-vv,,],[2,-$select$-vv,,],[3,-$ select$-vv,,],[,,,],[,,,]]$

What is the assembly$-$line efficiency? Round your answer to one decimal place.

$q,\%$

b$.$ Fill in the table below for a shift output of $20$ pieces. Break ties by choosing the lowest task number. If your answer is zero, enter $"0".$ Round your answers to the nearest whole number.

$\backslash$table$[[$Workstation$,$Tasks,Total Time,$],[1,$Idle Time,,$],[2,,,],[3,-$Select$-,,]]$

What is the assembly$-$line efficiency? Round your answer to one decimal place.