Additional Algo $3-8$ Time to Process X The Rocky Mountains Retreat rents out its skling condos during the off season for groups wanting to hold conferences. Attendee ride a bus from the airport together to the retreat. When an attendee arrives, they must first retrieve their luggage from the bus and then proceed to check into the conference. They then go to another table to get a swag bag before heading to the registration desk to get their condo assignment. The table below shows the number of workers at each location and the time it takes to process each attendee. A busload of $42$ has arrived and the system is empty. How long will it take to process all of the attendees? Note: Do not round intermediate calculations. Round your answer to $1$ decimal place.