The alloy contains 14% zinc. How many kilograms of alloy do you need to take to contain 3.5 kg of zinc?
| March 29, 2021 | education
Decision.
Suppose you need to take x kg of alloy. By condition
x kg – 100%
3.5 kg – 14%
Let’s make a proportion:
x / 3.5 = 100/14;
x = (3.5 * 100) / 14;
x = 25.
Answer: 25 kg
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