A new alloy is made by mixing 72 grams of iron with 9 grams of zinc. How many grams of iron are required to make the alloy when combined with 144 grams of zinc?
+36916 72 gm Fe / 9 gm Zn * 144 gm Zn =
72/9 * 144 gm Fe = ??? I think you can do it now.....
