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Maximum stripping ratio

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The total cost of ore mining at an open pit is $ 2.60 per tonne and that for waste is $ 1.90 per tonne. If the value of the ore is $ 14.90 per tonne and the company requires a 20% profit margin, what is the maximum stripping ratio?

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Solution Preview

As the company needs 20% profit, let us maximum cost that it can afford to spend more tonne.

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Solution Summary

The total cost of ore mining at an open pit is $ 2.60 per tonne and that for waste is $ 1.90 per tonne. If the value of the ore is $ 14.90 per tonne and the company requires a 20% profit margin, what is the maximum stripping ratio?

$2.19