Estimated Days Job Painting Assembly Packing Total Task Time Days until Due A 6.5 4.0 1.5 12.0 20 B 4.5 4.0 1.0 9.5 15 C 2.0 4.0 1.0 7.0 18 D 7.0 5.0 1.5 13.5 16

Consider the following job information. Each job must proceed sequentially through the different work​ areas, and each area can work on only one job at a time. Sequence the jobs according to the​ (1) first-come,​ first-served rule,​ (2) earliest due​ date, and​ (3) critical ratio. Calculate the average lateness under each rule. Which rule performs​ best?


The average job lateness under the CR rule is
  
enter your response here days. ​(Enter your response rounded to two decimal places.​)