SOLUTION: One type of lawn fertilizer consists of a mixture of Nitrogen, N, Phosphorus, P, and Potassium, K. An 80 Pound sample contains 8 more pounds of nitrogen and phosphorus than potassi

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Question 441783: One type of lawn fertilizer consists of a mixture of Nitrogen, N, Phosphorus, P, and Potassium, K. An 80 Pound sample contains 8 more pounds of nitrogen and phosphorus than potassium. There is 9 times as much potassium as phosphorus.
A. write a system of three equations whose solution gives the amount of n, p, and k in this sample.
B. slove the system
Answer by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!
80=n+p+k
k=9p
n+p=k+8
I can write the equations but I don't know how to "slove" it.
Maybe you can!