Question

an ore contains 5% of copper how much Ore is required to obtain 400 gram of copper

Answer 1

Answer:

If 5% of ore consists of copper. Therefore, to obtain 400 grams of copper you will need 8,000 grams of ore. This is how to go about it:

5% represents 400 grams(portion of copper in that ore)

Now, 100%( the total weight of ore) will be what?

5%=400 grams

100 grams=?

(100% X 100 grams)/5% = (20 x 400) = 8,000 grams of ore.

We can test this answer if it is correct.

(5/100 X 8,000)= 400 grams of copper

Step-by-step explanation:

Answer 2

Answer:

If 5% of ore consists of copper. Therefore, to obtain 400 grams of copper you will need 8,000 grams of ore. This is how to go about it:

5% represents 400 grams(portion of copper in that ore)

Now, 100%( the total weight of ore) will be what?

5%=400 grams

100 grams=?

(100% X 100 grams)/5% = (20 x 400) = 8,000 grams of ore.

We can test this answer if it is correct.

(5/100 X 8,000)= 400 grams of copper

Step-by-step explanation:

Step-by-step explanation: