An ore contain 30% of copper.How many kilograms will be required to obtain 12kg of copper. Share with your friends Share 0 Rishabh Mittal answered this Dear Student , Here is the similar link for your query : https://www.meritnation.com/ask-answer/question/an-ore-contains-12-copper-how-many-kilograms-of-the-ore-are/comparing-quantities/6822687 We hope the above link will help you in clearing the doubt . Regards 2 View Full Answer