IMMEDIATELY NEED HELP ON HW

You run an custom t-shirt shop. You have a very specific process to make your t-shirts. First, you need to bleach the t-shirt, which takes 30 seconds. Then you add colors (done in any order) that take 10 seconds for red, 20 seconds for blue, and 15 seconds for yellow. After you finish all the coloring, you need to iron the shirt taking 90 seconds, and then finally fold the shit taking 77 seconds. If you run your business 12 hours a day, and you want to make the most number of shirts possible in a day, what is the efficiency of your optimal facility layout? Round your answer to the nearest percent, without the \% symbol. For example, if your answer is 49.23%, enter 49 into the box