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skad [1K]
3 years ago
15

Brass is an alloy made from copper and zinc in the ratio 3:2, based on weight. If 120g of copper are needed for a certain piece

of brass, how much zinc will be needed for the same piece?
Mathematics
2 answers:
vagabundo [1.1K]3 years ago
7 0
The answer is 80.
You would first, divide 120 by 3.
Then, multiply 40 by 2.
Mkey [24]3 years ago
5 0
3 + 2 = 5 <span>Five parts of a whole

3/5 - cooper
2/5 - zinc

3/5 = 120g  [ * (5/3
3/5 *5/3 = 120g * 5/3
1 (100%) = 600/3g = 200g

200g * 2/5 = 400/5g = 80g zinc</span>
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