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Pennies used to be made of copper and zinc and had a mass of 3.1g today pennies are made of copper p...
4 months ago
Q:
Pennies used to be made of copper and zinc and had a mass of 3.1g today pennies are made of copper plated zinc and have a mass of 2.5 G. A new pennies mass is what percent of an old pennies mass?
Accepted Solution
A:
2.5/3.1 = 0.806451612903226 %