Answer:
2
Step-by-step explanation:
Try this one:
1) Gold
2) iron
3) mercury
4) potassium
5) Sodium
6) lead
7) tin
8) antimony
9) Tungsten
10) copper
11) silver
12 th
1/5 . 950
This is cause 20% =20/100 and when reduced it is 1/5