Solve for K
K=\frac{1}{18}\approx 0.055555556
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50=K\times 900
Calculate 30 to the power of 2 and get 900.
K\times 900=50
Swap sides so that all variable terms are on the left hand side.
K=\frac{50}{900}
Divide both sides by 900.
K=\frac{1}{18}
Reduce the fraction \frac{50}{900} to lowest terms by extracting and canceling out 50.
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