The manager of a gardening center needs to mix a plant foodthat is 13% nitrogen with one
Chapter 5, Problem 18(choose chapter or problem)
The manager of a gardening center needs to mix a plant foodthat is 13% nitrogen with one that is 18% nitrogen to obtain50 gallons of a plant food that is 16% nitrogen. How manygallons of each of the plant foods must be used?
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