Question

Медная руда содержит 8%меди. Сколько руды надо взять, чтобы получить 18 т меди.

Answer 1

Решение: 8:100=0,8 0,8•18=14,4. По-моему так!

Answer 2

18×100÷8 = 225 т руды нужно взять

Answer 3

Calculating the Amount of Ore Needed to Obtain 18 Tons of Copper

To calculate the amount of ore needed to obtain 18 tons of copper from ore containing 8% copper, we can use the following formula:

Amount of ore = (Amount of copper required / Percentage of copper in the ore)

Substituting the given values: Amount of ore = (18 tons / 0.08)

Calculation

Amount of ore = 225 tons

So, to obtain 18 tons of copper, approximately 225 tons of the ore containing 8% copper would be needed.

I hope this helps! If you have any other questions, feel free to ask.