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The following project is at the end of its 6th week. Find the cost and schedule variances. Also, find the CPI and SPI. Then find the critical ratio of the project using earned value calculations.

Finally, calculate the ETC and EAC for the project.

Activity Predecessor Duration (wks) Budget ($) Actual Cost ($) % Complete
a - 2 300 400 100
b - 3 200 180 100
c a 2 250 300 100
d a 5 600 400 20
e b,c 4 400 200 20