Question

percentage question please help me. question no 6​

Answer 1

Ore contains 12% of copper

kilogram of ore are required to get 69 kg

= 12% of 6 9

=69*12/100

=8.28kg

Since 8.28 kg of ore required to get 69 kg of copper.

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Answer 2

100 kg has 12 kg of copper.

a.q. (12x÷100)=69

=12x= 6900

=x=6900÷12= 575 kg of ore will have 69 kg of copper.