Question

С 450 кг руды одержали 64,4 кг меди . Який відцотковий вміст міді в руді

Answer 1

450кг - 100%
64,4кг - х%
х=64,4*100/450=14,3%

Answer 2

Percentage of Copper in the Ore

The percentage of copper in the ore can be calculated using the formula:

Percentage of copper = (Amount of copper obtained / Amount of ore used) * 100

Given that 450 kg of ore yielded 64.4 kg of copper, we can calculate the percentage of copper in the ore using the above formula.

Percentage of copper = (64.4 kg / 450 kg) * 100

Percentage of copper = (64.4 / 450) * 100

Percentage of copper ≈ 14.31%

So, the approximate percentage of copper in the ore is 14.31%.