A nickel is 5 percent of a dollar.
The president on a nickel is Thomas Jefferson. As of 2014, the US nickel is composed of 25 percent nickel and 75 percent copper.
pooop 100 percent
If that's 1 dollar, a nickel is 5%.
The ratio nickel/EDTA is 1:1.
The amount of 'nickel' in a nickel has not changed, it's still .250.