The alloy contains 58% copper, 24% zinc, the rest is lead. The mass of lead in the alloy is 27 g.
| March 23, 2021 | education
The alloy contains 58% copper, 24% zinc, the rest is lead. The mass of lead in the alloy is 27 g. Find the entire mass of the alloy.
Determine how many percent is in the lead alloy.
100 – 58 – 24 = 18%.
Knowing that 18% is 27 grams, we determine the weight of the entire alloy. To do this, we will compose and solve the proportion.
100% – X grams.
18% – 27 grams.
100/18 = X / 27.
18 x X = 100 x 27.
X = 2700/18 = 150 grams.
Answer: The mass of the entire alloy is 150 grams.
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