Calculate the critical ratios for the following activities and indicate which activities are probably on target and which need to be investigated. Comment on each activity. Actual Activity Progress Scheduled Progress Budgeted Cost Actual Cost 4 days 3 days 2 days 1 day 2 days 4 days 2 days 3 days 1 day 4 days $60 $50 $30 $40 $50 $20 $30 $25 $20 $25 Calculate the critical ratios for the following activities and indicate which activities are probably on target and which need to be investigated. Comment on each activity. Actual Activity Progress Scheduled Progress Budgeted Cost Actual Cost 4 days 3 days 2 days 1 day 2 days 4 days 2 days 3 days 1 day 4 days $60 $50 $30 $40 $50 $20 $30 $25 $20 $25