# Question: consider the material structure tree for item a if 20...

###### Question details

Consider the material structure tree for item A. If 20 units of A are needed, how many units of D are needed?

A) 30

B) 160

C) 60

D) 220

Consider the material structure tree for item A. If 20 units of A are needed, how many units of D are needed?

A) 30

B) 160

C) 60

D) 220