Calculate the metallurgical value of a penny from 1980 and from 2000. Use the value 2.4716$/lb. of copper and 0.9495$/lb. of Zinc.
Will MEDAL!

Question

Calculate the metallurgical value of a penny from 1980 and from 2000. Use the value 2.4716$/lb. of copper and 0.9495$/lb. of Zinc. 
Will MEDAL!

okdutchman7 · Answer

The 1980 penny weighs 3.11 grams.
The 2000 penny weight 2.5 grams

okdutchman7 · Answer

The 1980 penny was 95% copper and 5% Zinc
The 2000 penny was 97.5% Zinc and 2.5% Copper

okdutchman7 · Answer

1980 penny: Copper weighs 2.9545g and Zinc weighs 0.1555g
2000 penny: Copper weighs 0.0625g and Zinc weighs 2.4375g