Use the following $9-$Node diagram information to reduce the building schedule by $7$ working days in the most economical manner.

Contractor Days Offered Days Used Total $$$ Costs

SUB A $3$ days @ $$250$

SUB A $1$ days @ $$800$

SUB B $2$ days @ $$500$

SUB C $2$ days @ $$300$

SUB C $2$ days @ $$600$

SUB D None

SUB E $4$ days @ $300$

SUB F $3$ days @ $400$

SUB F $2$ days @ $700$

Total Costs $

$36.$ After the buy$-$down in Q $35,$ how many tasks are now critical? $1$ Point

a$.3$

b$.4$

c$.5$

d$.$ All $6$Use the following diagram to solve the schedule crash. Blanks are $1$ point each

Use the following $9-$Node diagram information to reduce the building schedule by $7$ working

days in the most economical manner.

After the buy$-$down in Q $35,$ how many tasks are now critical?