SOLUTION: a gold coin weighs 20 grams. if the coins contain gold, copper, and tin in the ratio 4:3:1. how much gold is there in the coin?

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Question 494739: a gold coin weighs 20 grams. if the coins contain gold, copper, and tin in the ratio 4:3:1. how much gold is there in the coin?


Answer by solver91311(24713) About Me  (Show Source):
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If the ratio of the 3 metals is 4:3:1, then 4 out of 8 parts (4 + 3 + 1 = 8) , i.e., one-half, are gold.

John

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