Raquel's Landscaping Company has contracted for several landscaping jobs, Each job requires preparing the areas (identifying the locations and types of plants, preparing the soil, etc.) and then planting the trees, bushes, and shrubs. The expected time for each of the jobs is shown next. Raquel is concerned with efficiency. She believes it is probably more efficient to use SPT (shortest processing time) as her priority rule. Calculate the makespan, the mean job flow time, and the average number of jobs in the system. "(Round your answer to 2 decimal places, eg. 1.75.) Makespan days Mean job flow time days Average number of jobs in the system jobs