Red brass is an alloy made by combining copper with zinc in a ratio of 16 and 3. How much zinc should be combined with 40 kg of copper to make red brass?

Which statement is an accurate description of life in mongolia in recent years? the majority of the population now lives in cities. after a brief period of democracy, communists regained control of the government. subsistence farming remains the primary economic activity in the country. relations between mongolia and china are now tense. -gradpoint