Problem $2$

A sofa factory works from $8$:$00$ to $16$:$00.$ They are supposed to produce $15$ sofas per day. Total operation time required for each sofas is as follow:

$\backslash$table$[[$Task$,$Time $($minutes$)],[$Sawing$,15],[$Frame$,25],[$Welding$,33],[$Stuffing$,15],[$Clothing$,12],[$Sewing$,20]]$

a$)$ What is the Takt Time for the sofa factory?

b$)$ Determine the number of workers required.