I need help with the attached, please. Specifically, I am unsure how you accurately work with Crashing.

29) A seven activigg project has the activity durations (in weeks) and costs shown in the table. It is possible to speed up every one of the activities by paying a little more, What is the least expensive 30week project? Normal Crash Activity Predecessor Duration Normal Cost Duration Crash Cost A -- 7 $2000 5 $3 000 B 8 $1 500 6 $2000 C A 12 $2500 10 $2900 D B 13 $3000 10 $4200 E B 15 $4000 12 $5500 F C, E 10 $3200 8 $4000 G D 7 $1 800 6 $2200 30) A seven activig project has the activity durations (in weeks) and costs shown in the table. The project manager has an overall budget of $20,000, what is the fastest completion time possible? Normal Crash Activity Predecessor Duration Normal Cost Duration Crash Cost A 7 $2000 5 $3 000 B 8 $1 500 6 $2000 C A 12 $2500 10 $2900 D B 13 $3000 10 $4200 E B 15 $4000 12 $5500 F C, E 10 $3200 8 $4000 G D 7 $1 800 6 $2200