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.

$\backslash$table$[[\backslash$table$[[$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$,3,1,7,,,,,,,,],[$B$,,,,9,9,6,,,,,],[$C$,,,,,,,2,8,4,7,9],[$Total$,3,1,7,9,9,6,2,8,4,7,9]]$

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.