True Naval brass contains 60% copper, 1% tin and what percent zinc?

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Multiple Choice

True Naval brass contains 60% copper, 1% tin and what percent zinc?

Naval brass is an alloy made from copper, zinc, and a small amount of tin. In percent composition, the parts must add up to 100%. Here copper is 60% and tin is 1%, so zinc must be the remainder: 100% − (60% + 1%) = 39%. That 39% zinc fits the idea that naval brass typically has about 60% copper, around 35–40% zinc, and a small tin addition to improve properties. The other options don’t sum to 100% and therefore aren’t possible for the overall composition.

Naval brass is an alloy made from copper, zinc, and a small amount of tin. In percent composition, the parts must add up to 100%. Here copper is 60% and tin is 1%, so zinc must be the remainder: 100% − (60% + 1%) = 39%. That 39% zinc fits the idea that naval brass typically has about 60% copper, around 35–40% zinc, and a small tin addition to improve properties. The other options don’t sum to 100% and therefore aren’t possible for the overall composition.

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