A reaction which is of first order w.r.t reactant A, has a rate constant is 6 ${\min }^{-1}$ If we start with $\left[\mathrm{A}\right]=0.5mol.L^{-1}$ ,when would $\left[\mathrm{A}\right]$ reach the value of 0.05$\mathrm{mol}.{\mathrm{L}}^{-1}$