Can you show how to do in excel?

Bowman Builders manufactures steel storage sheds for commercial use, Joe Bowman, president of Bowman Builders, is contemplating producing sheds for home use. The activities necessary to build an experimental model and related data are given in the accompanying table.

(a) What is the project completion date?
(b) Formulate an LP problem to crash this project to 10 weeks.

NORMAL CRASH
NORMAL CRASH COST COST IMMEDIATE
ACTIVITY TIME TIME ($) ($) PREDECESSORS
A 3 2 1,000 1,600 ---
B 2 1 2,000 2,700 ---
C 1 1 300 300 ---
D 7 3 1,300 1,600 A
E 6 3 850 1,000 B
F 2 1 4,000 5,000 C
G 4 2 1,500 2,000 D, E
Can you show how to do in excel