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Consider a single-input-single-output $\text{(SISO)}$ system with the transfer function $$G_{P}\left ( s \right ) =\frac{2\left ( s + 1 \right )}{\left ( \dfrac{1}{2} s + 1 \right )\left ( \dfrac{1}{4} s + 1\right )}$$ where the time constants are in minutes. The system is forced by a unit step input at time $t = 0$. The time at which the output response reaches the maximum is ______________ minutes *(rounded off to two decimal places).*