1. At 458.0 hours for 22.3 EV, each EV point has been taking 20.54 hours.
2. At this rate, the hours required to reach 100 EV were 77.7 * 20.54 = 1,596 hours.
3. At the rate of 126.7 hours per week, they would reach 100 EV in 12.6 more weeks.
4. Because they had already spent 7 weeks on the job, they would finish in 19.6 weeks instead of the 17-week commitment, or 2.6 weeks late.