In sand casting of magnesium alloys, what is the amount of silica sand used in an American mix?$

In sand casting of magnesium alloys, what is the amount of silica sand

1.	In sand casting of magnesium alloys, what is the amount of silica sand used in an American mix?$
A.	80 lb
B.	90 lb
C.	100 lb
D.	110 lb
Answer» D. 110 lb