10 9. The following 4-step process is used for fulfilling an order. This process is staffed by two workers: Worker A performs the first two Steps and worker B takes care of the last two steps. Each worker is paid $20 per hour. How long (min) will it take to fill a rush order? STEP 1 STEP 2 STEP 3 STEP 4 1 min./order 3 min./order 3 min./order 3 min./order 20 88 60 MacBook Air