The following project is at the end of its 6 ^th 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 b d e Predecessor Duration (wks) a a b.c wwww 2 3 2 5 4 Budget ($) 300 200 250 600 400 Actual Cost ($) 400 180 300 400 200 % Complete 100 100 100 20 20