You are developing a performance progress report for a project you are managing. The following time$-$phased budget was developed earlier in the planning stage and is being used as the standard against which the project performance is measured.

Work Packages W$1$ W$2$ W$3$ W$4$ W$5$ W$6$ W$7$ W$8$ W$9$ W$10$ W$11$

A $172$

B $723$

C $39122$

Total $17272339122$

You are analyzing the project performance at the end of Week $5.$ Activity $"$B$"$ is $40\%$ complete and its actual cost is $15.$ What is the Schedule Performance Index of this activity?

Use two decimal places in your calculations.