Question

An ore contains 6% copper. Calculate the mass of copper in 100 kg of this ore. Show your working.

Answer 1

Given :

% of carbon the given ore contains :

= 6%

To Find :

Mass of Copper in 100 kg of this ore = ?

Solution :

Since , it is given that the sample of ore contains 6 % of copper , it means :

Weight of copper in every 100 gm of ore = 6 gm

So here we can use unitary method to solve this :

So , weight of copper  in 1 gm of the ore = $\frac{6}{100}$ gm

So the weight of copper  in 100 kg or $100 \times 1000$ gm of the ore is :

$= 100000 \times \frac{6}{100}$ gm

$= 6 \times 1000$ gm

= 6000 gm

So in 100 kg the given ore there will be 6000 g of copper .