Mathematics, 18.10.2021 16:20 deontehiggins42
A gardener has two fertilisers that contain different concentrations of nitrogen. One is 3% nitrogen and the other is 11% nitrogen. How many pounds of each should she mix to obtain 20 pounds of a 9% concentration? 1. Define the variables if they are not already defined in the problem, i. e. Let x be and y be (10 marks).
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A gardener has two fertilisers that contain different concentrations of nitrogen. One is 3% nitrogen...
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