Please Find the shortest possible time & draw the worker/machine chart for it

What is the minimum total time to toast three slices of bread in a standard toaster such as that shown below? Fig. The machine toasts one side of each of two pieces at the same time. It takes two hands to insert or remove each slice, as illustrated. To turn the slice over it is merely necessary to push the toaster door all the way down and allow the spring to bring it back. Thus, two slices can be turned at the same time, but only one can be inserted or removed. The time to toast a side is exactly . 50 minutes. Time to turn over is .02 minutes. Time to remove toasted slice and place on plate is .05 minutes, and the time to secure a piece of bread and place in the toaster is .05 minutes. The problem is to find the shortest possible time required to toast three slices on both sides, starting with bread on plate, and returning toast to plate. Assume toaster is warmed and ready to go. Find the shortest possible time and draw the worker/machine chart for it