Current Attempt in Progress

It is known that the kinetics of recrystallization for some alloy obey the Avrami equation, and that the value of $n$ in the exponential is $3\mathrm{.}0.$ If$,$ at some temperature, the fraction recrystallized is $0\mathrm{.}30$ after $100$ min $,$ determine the rate of recrystallization at this temperature.

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min$-1$