$$\(20 P=\frac{t-w}{y}\)$$ $$\(t=9.7\)$$ correct to 1 decimal place $$\(w=5.9\)$$ correct to 1 decimal place $$\(y=3\)$$ correct to 1 significant figure Calculate the upper bound for the value of $$\(P\)$$. Show your working clearly.

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