Answer:
-Use of magnet
-Mixing in water
Explanation:
Two ways are;
1) Use of magnet: Nails are made of steel and thus can be attracted by magnets. So when a magnet is put inside the mixture, it attracts the magnet out.
2) Mixing it in water: When it is put in water, the nails will go to the bottom while the saw dust will float on the water.
