Installing a muffler at Barut Garage, Inc. involves a five work tasks. Azra has timed workers performing these tasks seven times, with the results (in minutes) shown in the following table. No Tasks 1 2 3 4 5 6 7 PR Select correct 4 4 9 6 7 6 3 90 mufflers Remove old 5 B 6 8 7 8 7 85 muffler Install new 13 11 11 13 15 14 11 85 muffier Inspect the work Complet e paperwo rk 4 4 10 10 A 4 3 3 m 90 10 10 10 100