From 1 ton of copper pyrite containing 2.5% copper, 22 kg of copper were obtained. How many percent of copper were you able to recover and how many percent were losses?
Let us find how much copper in percentage terms we managed to isolate from a given amount of copper pyrite.
In the condition of the problem it is said that from 1 ton of copper pyrite, which in kilograms is 1000 kg, 22 kg of copper were obtained.
Consequently, in percentage terms, from 1000 kg of copper pyrite, it was possible to obtain 100 * 22/1000 = 22 * 100/1000 = 22/10 = 2.2% copper.
According to the condition of the problem, copper pyrite contains 2.5% copper, therefore, the losses were 2.5 – 2.2 = 0.3%.
Answer: we got 2.2% of copper, losses amounted to 0.3%.
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