An ore contains 5% of copper. How much ore is required to obtain 400 g – InterviewSolution

InterviewSolution

1.

An ore contains 5% of copper. How much ore is required to obtain 400 g of copper?

Answer»

The amount of ore be x kg

Given,

Total amount of Copper

= 400g

= 0.4 kg

A/Q,

5% of x = 0.4

=> 5/100 × x = 0.4

=> 5x = 40

=> x = 40/5

=> x = 8kghence 8kg

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